222089731 has 2 divisors, whose sum is σ = 222089732. Its totient is φ = 222089730.

The previous prime is 222089719. The next prime is 222089761. The reversal of 222089731 is 137980222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222089731 - 2⁷ = 222089603 is a prime.

It is a super-2 number, since 2×222089731² = 98647697231304722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (222089761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111044865 + 111044866.

It is an arithmetic number, because the mean of its divisors is an integer number (111044866).

Almost surely, 2^222089731 is an apocalyptic number.

222089731 is a deficient number, since it is larger than the sum of its proper divisors (1).

222089731 is an equidigital number, since it uses as much as digits as its factorization.

222089731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 222089731 is about 14902.6752967378. The cubic root of 222089731 is about 605.5864640821.

The spelling of 222089731 in words is "two hundred twenty-two million, eighty-nine thousand, seven hundred thirty-one".