22212012112 has 20 divisors (see below), whose sum is σ = 43461873396. Its totient is φ = 10996044800.

The previous prime is 22212012101. The next prime is 22212012139. The reversal of 22212012112 is 21121021222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14477864976 + 7734147136 = 120324^2 + 87944^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6870913 + ... + 6874144.

Almost surely, 2^22212012112 is an apocalyptic number.

It is an amenable number.

22212012112 is a deficient number, since it is larger than the sum of its proper divisors (21249861284).

22212012112 is a wasteful number, since it uses less digits than its factorization.

22212012112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13745166 (or 13745160 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22212012112 its reverse (21121021222), we get a palindrome (43333033334).

The spelling of 22212012112 in words is "twenty-two billion, two hundred twelve million, twelve thousand, one hundred twelve".