20012120112 has 40 divisors (see below), whose sum is σ = 54739036656. Its totient is φ = 6278311936.

The previous prime is 20012120099. The next prime is 20012120207. The reversal of 20012120112 is 21102121002.

It is a super-2 number, since 2×20012120112² (a number of 21 digits) contains 22 as substring.

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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12261513 + ... + 12263144.

Almost surely, 2^20012120112 is an apocalyptic number.

It is an amenable number.

20012120112 is an abundant number, since it is smaller than the sum of its proper divisors (34726916544).

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

20012120112 is a wasteful number, since it uses less digits than its factorization.

20012120112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24524685 (or 24524679 counting only the distinct ones).

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

Adding to 20012120112 its reverse (21102121002), we get a palindrome (41114241114).

The spelling of 20012120112 in words is "twenty billion, twelve million, one hundred twenty thousand, one hundred twelve".