20102112012 has 48 divisors (see below), whose sum is σ = 47474294112. Its totient is φ = 6619660800.

The previous prime is 20102112007. The next prime is 20102112031. The reversal of 20102112012 is 21021120102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 535738 + ... + 572030.

It is an arithmetic number, because the mean of its divisors is an integer number (989047794).

Almost surely, 2^20102112012 is an apocalyptic number.

It is an amenable number.

20102112012 is an abundant number, since it is smaller than the sum of its proper divisors (27372182100).

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

20102112012 is a wasteful number, since it uses less digits than its factorization.

20102112012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36858 (or 36856 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20102112012 its reverse (21021120102), we get a palindrome (41123232114).

The spelling of 20102112012 in words is "twenty billion, one hundred two million, one hundred twelve thousand, twelve".