My friend sent cuttings to me before selling his home in DC.

Im wondering whether it is easy to root big cuttings?

Take a look  here.
http://figs4funforum.websitetoolbox.com/post/rooting-large-cuttings-5016449?highlight=loslunas

I have recently tried rooting some large cuttings, about 1-1.5 inches in diameter with good success in 60/40 perlite/potting mix in a Rubbermaid type container at ~75F.  Your cutting the size of a hand may be new area to experiment with though.

I would say , go outside and stick one on the ground 12" deep or put them in water but you need to change the water every 3rd day because the water will start to smell,but if you do that , you need to cut the bottom off.

Do you know what type of fig tree it is ?

Best luck

Put it in a pot so that only the top edge sticks out and there's at least a few inches of medium below the bottom of the cutting.  The rooting medium should be something that drains fast like perlite and some organic stuff (I use peatmoss, worm castings and pine bark dust) maybe around 70% perlite.  Water it enough so it never dries out.  I put some Napa Floor Dry in there.  If you can't see it as orange (meaning it's white so the same color as the perlite) it's too dry.  Keep it at 75 - 80 degrees.  Look up the posts about scoring the bark down to the cambium (search on cambium) and think about whether you want to use rooting hormone.  I do.  If it's 3 or more years old roots may grow a long time before a shoot comes out.  When the roots show up fertilize with houseplant strength fertilizer and move to a good soil.  I've used water and soda bottles but your really wide cutting may require a 5 gal pot.  Be sure you use a straight sided container.  It helps to cut it in half vertically first then tape it back together.  It will be much easier to get the roots out without breaking them that way.  Clear is nice if you can do it because you can tell if it has roots.  Gas station cups work well, too, if you can find one wide enough.  Gallon milk containers might work for you.  You'll have to tape one on top of the other (cut out the bottom of the upper container(s)) to get it long enough.  You have to cut drainage holes out of the bottom.

Rooting is the same, regardless of size. Just takes bigger bags, or bigger pots, or bigger cups, or bigger whatever. See Growing Tips.

I wish i had friends like yours......

I got email from my friend about big cuttings,

"......

From this picture, is it Marseilles White?