Q: Is 221,120 a Prime Number?
A: No, 221,120 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 221120 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 64 80 160 320 691 1,382 2,764 3,455 5,528 6,910 11,056 13,820 22,112 27,640 44,224 55,280 110,560 and 221,120, with no remainder.
Since 221,120 cannot be divided by just 1 and 221,120, it is not a prime number.