22149772812 has 24 divisors (see below), whose sum is σ = 57425337200. Its totient is φ = 7383257568.

The previous prime is 22149772807. The next prime is 22149772817. The reversal of 22149772812 is 21827794122.

It is an interprime number because it is at equal distance from previous prime (22149772807) and next prime (22149772817).

It is a super-2 number, since 2×22149772812² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22149772817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102545137 + ... + 102545352.

Almost surely, 2^22149772812 is an apocalyptic number.

It is an amenable number.

22149772812 is an abundant number, since it is smaller than the sum of its proper divisors (35275564388).

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

22149772812 is a wasteful number, since it uses less digits than its factorization.

22149772812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205090502 (or 205090494 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The spelling of 22149772812 in words is "twenty-two billion, one hundred forty-nine million, seven hundred seventy-two thousand, eight hundred twelve".