22112222222112 has 96 divisors (see below), whose sum is σ = 63322240665600. Its totient is φ = 6700580593920.

The previous prime is 22112222222099. The next prime is 22112222222113. The reversal of 22112222222112 is 21122222221122.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

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 (22112222222113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143115333 + ... + 143269755.

It is an arithmetic number, because the mean of its divisors is an integer number (659606673600).

Almost surely, 2^{22112222222112} is an apocalyptic number.

22112222222112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22112222222112 is an abundant number, since it is smaller than the sum of its proper divisors (41210018443488).

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

22112222222112 is a wasteful number, since it uses less digits than its factorization.

22112222222112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290046 (or 290038 counting only the distinct ones).

The product of its digits is 1024, while the sum is 24.

Adding to 22112222222112 its reverse (21122222221122), we get a palindrome (43234444443234).

It can be divided in two parts, 2 and 2112222222112, that multiplied together give a palindrome (4224444444224).

The spelling of 22112222222112 in words is "twenty-two trillion, one hundred twelve billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred twelve".