222815961138 has 16 divisors (see below), whose sum is σ = 445651934976. Its totient is φ = 74268651600.

The previous prime is 222815961133. The next prime is 222815961161. The reversal of 222815961138 is 831169518222.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (222815961133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687138 + ... + 958013.

It is an arithmetic number, because the mean of its divisors is an integer number (27853245936).

Almost surely, 2^222815961138 is an apocalyptic number.

222815961138 is an abundant number, since it is smaller than the sum of its proper divisors (222835973838).

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

222815961138 is a wasteful number, since it uses less digits than its factorization.

222815961138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667729.

The product of its digits is 414720, while the sum is 48.

The spelling of 222815961138 in words is "two hundred twenty-two billion, eight hundred fifteen million, nine hundred sixty-one thousand, one hundred thirty-eight".