22022288712 has 36 divisors (see below), whose sum is σ = 59647109145. Its totient is φ = 7340343168.

The previous prime is 22022288689. The next prime is 22022288719. The reversal of 22022288712 is 21788222022.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 11717196516 + 10305092196 = 108246^2 + 101514^2 .

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

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=104934.

It is a super-2 number, since 2×22022288712² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (22022288719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1250464 + ... + 1267952.

Almost surely, 2^22022288712 is an apocalyptic number.

It is an amenable number.

22022288712 is an abundant number, since it is smaller than the sum of its proper divisors (37624820433).

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

22022288712 is an frugal number, since it uses more digits than its factorization.

22022288712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34990 (or 17494 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The spelling of 22022288712 in words is "twenty-two billion, twenty-two million, two hundred eighty-eight thousand, seven hundred twelve".