Q: Is 121,221 a Prime Number?
A: No, 121,221 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 121221 can be evenly divided by 1 3 9 13,469 40,407 and 121,221, with no remainder.
Since 121,221 cannot be divided by just 1 and 121,221, it is not a prime number.