222136812 has 36 divisors (see below), whose sum is σ = 562501576. Its totient is φ = 73915200.

The previous prime is 222136769. The next prime is 222136823. The reversal of 222136812 is 218631222.

222136812 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16503 + ... + 26769.

Almost surely, 2^222136812 is an apocalyptic number.

It is an amenable number.

222136812 is an abundant number, since it is smaller than the sum of its proper divisors (340364764).

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

222136812 is a wasteful number, since it uses less digits than its factorization.

222136812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10878 (or 10873 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 222136812 is about 14904.2548287393. The cubic root of 222136812 is about 605.6292539966.

The spelling of 222136812 in words is "two hundred twenty-two million, one hundred thirty-six thousand, eight hundred twelve".