20102012118 has 24 divisors (see below), whose sum is σ = 43579273608. Its totient is φ = 6696837792.

The previous prime is 20102012089. The next prime is 20102012129. The reversal of 20102012118 is 81121020102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 20102012118.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 286980 + ... + 350087.

It is an arithmetic number, because the mean of its divisors is an integer number (1815803067).

Almost surely, 2^20102012118 is an apocalyptic number.

20102012118 is an abundant number, since it is smaller than the sum of its proper divisors (23477261490).

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

20102012118 is a wasteful number, since it uses less digits than its factorization.

20102012118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638828 (or 638825 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The spelling of 20102012118 in words is "twenty billion, one hundred two million, twelve thousand, one hundred eighteen".