20112511012 has 24 divisors (see below), whose sum is σ = 38470072032. Its totient is φ = 9124560000.

The previous prime is 20112510973. The next prime is 20112511021. The reversal of 20112511012 is 21011521102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413989 + ... + 460012.

It is an arithmetic number, because the mean of its divisors is an integer number (1602919668).

Almost surely, 2^20112511012 is an apocalyptic number.

20112511012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20112511012 is a deficient number, since it is larger than the sum of its proper divisors (18357561020).

20112511012 is a wasteful number, since it uses less digits than its factorization.

20112511012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874539 (or 874537 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 16.

The spelling of 20112511012 in words is "twenty billion, one hundred twelve million, five hundred eleven thousand, twelve".