20011112012120 has 32 divisors (see below), whose sum is σ = 45027627559200. Its totient is φ = 8003978043648.

The previous prime is 20011112012093. The next prime is 20011112012123. The reversal of 20011112012120 is 2121021111002.

It is a super-2 number, since 2×20011112012120² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20011112012095 and 20011112012104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011112012123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13891349 + ... + 15264068.

It is an arithmetic number, because the mean of its divisors is an integer number (1407113361225).

Almost surely, 2^{20011112012120} is an apocalyptic number.

20011112012120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011112012120 is an abundant number, since it is smaller than the sum of its proper divisors (25016515547080).

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

20011112012120 is a wasteful number, since it uses less digits than its factorization.

20011112012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29172587 (or 29172583 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20011112012120 its reverse (2121021111002), we get a palindrome (22132133123122).

The spelling of 20011112012120 in words is "twenty trillion, eleven billion, one hundred twelve million, twelve thousand, one hundred twenty".