22200222112 has 24 divisors (see below), whose sum is σ = 44772706692. Its totient is φ = 10829376000.

The previous prime is 22200222103. The next prime is 22200222113. The reversal of 22200222112 is 21122200222.

It can be written as a sum of positive squares in 2 ways, for example, as 20402122896 + 1798099216 = 142836^2 + 42404^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (22200222113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8459139 + ... + 8461762.

Almost surely, 2^22200222112 is an apocalyptic number.

It is an amenable number.

22200222112 is an abundant number, since it is smaller than the sum of its proper divisors (22572484580).

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

22200222112 is a wasteful number, since it uses less digits than its factorization.

22200222112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16920952 (or 16920944 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22200222112 its reverse (21122200222), we get a palindrome (43322422334).

The spelling of 22200222112 in words is "twenty-two billion, two hundred million, two hundred twenty-two thousand, one hundred twelve".