12122021112020 has 12 divisors (see below), whose sum is σ = 25456244335284. Its totient is φ = 4848808444800.

The previous prime is 12122021112001. The next prime is 12122021112043. The reversal of 12122021112020 is 2021112022121.

It can be written as a sum of positive squares in 2 ways, for example, as 1267776913936 + 10854244198084 = 1125956^2 + 3294578^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12122021112020.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303050527781 + ... + 303050527820.

It is an arithmetic number, because the mean of its divisors is an integer number (2121353694607).

Almost surely, 2^{12122021112020} is an apocalyptic number.

12122021112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12122021112020 is an abundant number, since it is smaller than the sum of its proper divisors (13334223223264).

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

12122021112020 is a wasteful number, since it uses less digits than its factorization.

12122021112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606101055610 (or 606101055608 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12122021112020 its reverse (2021112022121), we get a palindrome (14143133134141).

The spelling of 12122021112020 in words is "twelve trillion, one hundred twenty-two billion, twenty-one million, one hundred twelve thousand, twenty".