Q: Is 221,208 a Prime Number?
A: No, 221,208 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 221208 can be evenly divided by 1 2 3 4 6 8 12 13 24 26 39 52 78 104 156 312 709 1,418 2,127 2,836 4,254 5,672 8,508 9,217 17,016 18,434 27,651 36,868 55,302 73,736 110,604 and 221,208, with no remainder.
Since 221,208 cannot be divided by just 1 and 221,208, it is not a prime number.