222163657 has 2 divisors, whose sum is σ = 222163658. Its totient is φ = 222163656.

The previous prime is 222163609. The next prime is 222163661. The reversal of 222163657 is 756361222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189227536 + 32936121 = 13756^2 + 5739^2 .

It is a cyclic number.

It is not a de Polignac number, because 222163657 - 2¹⁵ = 222130889 is a prime.

It is a super-2 number, since 2×222163657² = 98713380983227298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (222163057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111081828 + 111081829.

It is an arithmetic number, because the mean of its divisors is an integer number (111081829).

Almost surely, 2^222163657 is an apocalyptic number.

It is an amenable number.

222163657 is a deficient number, since it is larger than the sum of its proper divisors (1).

222163657 is an equidigital number, since it uses as much as digits as its factorization.

222163657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 34.

The square root of 222163657 is about 14905.1553832894. The cubic root of 222163657 is about 605.6536495666.

The spelling of 222163657 in words is "two hundred twenty-two million, one hundred sixty-three thousand, six hundred fifty-seven".