Q: Is 2,221,215 a Prime Number?
A: No, 2,221,215 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 2221215 can be evenly divided by 1 3 5 15 373 397 1,119 1,191 1,865 1,985 5,595 5,955 148,081 444,243 740,405 and 2,221,215, with no remainder.
Since 2,221,215 cannot be divided by just 1 and 2,221,215, it is not a prime number.