22153423212 has 60 divisors (see below), whose sum is σ = 58297085616. Its totient is φ = 7335554400.

The previous prime is 22153423157. The next prime is 22153423247. The reversal of 22153423212 is 21232435122.

22153423212 is a `hidden beast` number, since 2 + 21 + 5 + 3 + 423 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 177483 + ... + 275330.

Almost surely, 2^22153423212 is an apocalyptic number.

It is an amenable number.

22153423212 is an abundant number, since it is smaller than the sum of its proper divisors (36143662404).

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

22153423212 is a wasteful number, since it uses less digits than its factorization.

22153423212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452980 (or 452969 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

Adding to 22153423212 its reverse (21232435122), we get a palindrome (43385858334).

The spelling of 22153423212 in words is "twenty-two billion, one hundred fifty-three million, four hundred twenty-three thousand, two hundred twelve".