Q: Is 221,121 a Prime Number?
A: No, 221,121 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 221121 can be evenly divided by 1 3 9 79 237 311 711 933 2,799 24,569 73,707 and 221,121, with no remainder.
Since 221,121 cannot be divided by just 1 and 221,121, it is not a prime number.