20102112012112 has 80 divisors (see below), whose sum is σ = 43644484074240. Its totient is φ = 8909165431296.

The previous prime is 20102112012079. The next prime is 20102112012127. The reversal of 20102112012112 is 21121021120102.

It is a super-2 number, since 2×20102112012112² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18880662 + ... + 19916917.

It is an arithmetic number, because the mean of its divisors is an integer number (545556050928).

Almost surely, 2^{20102112012112} is an apocalyptic number.

It is an amenable number.

20102112012112 is an abundant number, since it is smaller than the sum of its proper divisors (23542372062128).

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

20102112012112 is a wasteful number, since it uses less digits than its factorization.

20102112012112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38797700 (or 38797694 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20102112012112 its reverse (21121021120102), we get a palindrome (41223133132214).

The spelling of 20102112012112 in words is "twenty trillion, one hundred two billion, one hundred twelve million, twelve thousand, one hundred twelve".