222255001 has 2 divisors, whose sum is σ = 222255002. Its totient is φ = 222255000.

The previous prime is 222254971. The next prime is 222255017. The reversal of 222255001 is 100552222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115670025 + 106584976 = 10755^2 + 10324^2 .

It is a cyclic number.

It is not a de Polignac number, because 222255001 - 2⁵ = 222254969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222255001.

It is not a weakly prime, because it can be changed into another prime (222255031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111127500 + 111127501.

It is an arithmetic number, because the mean of its divisors is an integer number (111127501).

Almost surely, 2^222255001 is an apocalyptic number.

It is an amenable number.

222255001 is a deficient number, since it is larger than the sum of its proper divisors (1).

222255001 is an equidigital number, since it uses as much as digits as its factorization.

222255001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 222255001 is about 14908.2192430887. The cubic root of 222255001 is about 605.7366443093.

The spelling of 222255001 in words is "two hundred twenty-two million, two hundred fifty-five thousand, one".