222222111912 has 48 divisors (see below), whose sum is σ = 637254589140. Its totient is φ = 69716740608.

The previous prime is 222222111911. The next prime is 222222111931. The reversal of 222222111912 is 219111222222.

It can be written as a sum of positive squares in 2 ways, for example, as 177161860836 + 45060251076 = 420906^2 + 212274^2 .

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (222222111911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90775783 + ... + 90778230.

Almost surely, 2^222222111912 is an apocalyptic number.

It is an amenable number.

222222111912 is an abundant number, since it is smaller than the sum of its proper divisors (415032477228).

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

222222111912 is a wasteful number, since it uses less digits than its factorization.

222222111912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181554042 (or 181554035 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The spelling of 222222111912 in words is "two hundred twenty-two billion, two hundred twenty-two million, one hundred eleven thousand, nine hundred twelve".