Q: Is 2,173,221 a Prime Number?
A: No, 2,173,221 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 2173221 can be evenly divided by 1 3 9 241,469 724,407 and 2,173,221, with no remainder.
Since 2,173,221 cannot be divided by just 1 and 2,173,221, it is not a prime number.