20213230112 has 24 divisors (see below), whose sum is σ = 42135668316. Its totient is φ = 9512108032.

The previous prime is 20213230033. The next prime is 20213230127. The reversal of 20213230112 is 21103231202.

It can be written as a sum of positive squares in 2 ways, for example, as 19431244816 + 781985296 = 139396^2 + 27964^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

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, 18577793 + ... + 18578880.

Almost surely, 2^20213230112 is an apocalyptic number.

It is an amenable number.

20213230112 is an abundant number, since it is smaller than the sum of its proper divisors (21922438204).

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

20213230112 is a wasteful number, since it uses less digits than its factorization.

20213230112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37156700 (or 37156692 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20213230112 its reverse (21103231202), we get a palindrome (41316461314).

The spelling of 20213230112 in words is "twenty billion, two hundred thirteen million, two hundred thirty thousand, one hundred twelve".