222665912 has 16 divisors (see below), whose sum is σ = 477141360. Its totient is φ = 95428224.

The previous prime is 222665909. The next prime is 222665923. The reversal of 222665912 is 219566222.

222665912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1988033 + ... + 1988144.

It is an arithmetic number, because the mean of its divisors is an integer number (29821335).

Almost surely, 2^222665912 is an apocalyptic number.

It is an amenable number.

222665912 is an abundant number, since it is smaller than the sum of its proper divisors (254475448).

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

222665912 is a wasteful number, since it uses less digits than its factorization.

222665912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3976190 (or 3976186 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 222665912 is about 14921.9942366964. The cubic root of 222665912 is about 606.1097152010.

The spelling of 222665912 in words is "two hundred twenty-two million, six hundred sixty-five thousand, nine hundred twelve".