20220123112 has 16 divisors (see below), whose sum is σ = 43328835360. Its totient is φ = 8665767024.

The previous prime is 20220123107. The next prime is 20220123113. The reversal of 20220123112 is 21132102202.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20220123113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180536758 + ... + 180536869.

It is an arithmetic number, because the mean of its divisors is an integer number (2708052210).

Almost surely, 2^20220123112 is an apocalyptic number.

It is an amenable number.

20220123112 is an abundant number, since it is smaller than the sum of its proper divisors (23108712248).

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

20220123112 is a wasteful number, since it uses less digits than its factorization.

20220123112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361073640 (or 361073636 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20220123112 its reverse (21132102202), we get a palindrome (41352225314).

The spelling of 20220123112 in words is "twenty billion, two hundred twenty million, one hundred twenty-three thousand, one hundred twelve".