Q: Is 1,221,330 a Prime Number?
A: No, 1,221,330 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 1221330 can be evenly divided by 1 2 3 5 6 10 11 15 22 30 33 55 66 110 165 330 3,701 7,402 11,103 18,505 22,206 37,010 40,711 55,515 81,422 111,030 122,133 203,555 244,266 407,110 610,665 and 1,221,330, with no remainder.
Since 1,221,330 cannot be divided by just 1 and 1,221,330, it is not a prime number.