22102020012 has 12 divisors (see below), whose sum is σ = 51571380056. Its totient is φ = 7367340000.

The previous prime is 22102020001. The next prime is 22102020043. The reversal of 22102020012 is 21002020122.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×22102020012² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 1841835001 = 22102020012 / (2 + 2 + 1 + 0 + 2 + 0 + 2 + 0 + 0 + 1 + 2).

It is a self number, because there is not a number n which added to its sum of digits gives 22102020012.

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, 920917489 + ... + 920917512.

Almost surely, 2^22102020012 is an apocalyptic number.

It is an amenable number.

22102020012 is an abundant number, since it is smaller than the sum of its proper divisors (29469360044).

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

22102020012 is a wasteful number, since it uses less digits than its factorization.

22102020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1841835008 (or 1841835006 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22102020012 its reverse (21002020122), we get a palindrome (43104040134).

The spelling of 22102020012 in words is "twenty-two billion, one hundred two million, twenty thousand, twelve".