222165880 has 32 divisors (see below), whose sum is σ = 512069040. Its totient is φ = 86698240.

The previous prime is 222165869. The next prime is 222165883. The reversal of 222165880 is 88561222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222165883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66094 + ... + 69373.

Almost surely, 2^222165880 is an apocalyptic number.

222165880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222165880 is an abundant number, since it is smaller than the sum of its proper divisors (289903160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222165880 is a wasteful number, since it uses less digits than its factorization.

222165880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135519 (or 135515 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 222165880 is about 14905.2299546166. The cubic root of 222165880 is about 605.6556696444.

The spelling of 222165880 in words is "two hundred twenty-two million, one hundred sixty-five thousand, eight hundred eighty".