12122020020 has 48 divisors (see below), whose sum is σ = 37027263168. Its totient is φ = 2938671360.

The previous prime is 12122019977. The next prime is 12122020069. The reversal of 12122020020 is 2002022121.

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 = 12122019978 and 12122020005.

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, 9182689 + ... + 9184008.

It is an arithmetic number, because the mean of its divisors is an integer number (771401316).

Almost surely, 2^12122020020 is an apocalyptic number.

12122020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12122020020 is an abundant number, since it is smaller than the sum of its proper divisors (24905243148).

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

12122020020 is a wasteful number, since it uses less digits than its factorization.

12122020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18366720 (or 18366718 counting only the distinct ones).

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

Adding to 12122020020 its reverse (2002022121), we get a palindrome (14124042141).

The spelling of 12122020020 in words is "twelve billion, one hundred twenty-two million, twenty thousand, twenty".