Q: Is 1,221,021 a Prime Number?
A: No, 1,221,021 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 1221021 can be evenly divided by 1 3 9 27 41 123 369 1,103 1,107 3,309 9,927 29,781 45,223 135,669 407,007 and 1,221,021, with no remainder.
Since 1,221,021 cannot be divided by just 1 and 1,221,021, it is not a prime number.