22020012120 has 64 divisors (see below), whose sum is σ = 66455665920. Its totient is φ = 5836836224.

The previous prime is 22020012109. The next prime is 22020012139. The reversal of 22020012120 is 2121002022.

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

It is a junction number, because it is equal to n+sod(n) for n = 22020012096 and 22020012105.

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, 529362 + ... + 569441.

It is an arithmetic number, because the mean of its divisors is an integer number (1038369780).

Almost surely, 2^22020012120 is an apocalyptic number.

22020012120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22020012120 is an abundant number, since it is smaller than the sum of its proper divisors (44435653800).

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

22020012120 is a wasteful number, since it uses less digits than its factorization.

22020012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098984 (or 1098980 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22020012120 its reverse (2121002022), we get a palindrome (24141014142).

The spelling of 22020012120 in words is "twenty-two billion, twenty million, twelve thousand, one hundred twenty".