Q: Is 3,521,221 a Prime Number?
A: No, 3,521,221 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 3521221 can be evenly divided by 1 11 121 29,101 320,111 and 3,521,221, with no remainder.
Since 3,521,221 cannot be divided by just 1 and 3,521,221, it is not a prime number.