121112020122020 has 48 divisors (see below), whose sum is σ = 258513462673200. Its totient is φ = 47649010552320.

The previous prime is 121112020122019. The next prime is 121112020122139. The reversal of 121112020122020 is 20221020211121.

It can be written as a sum of positive squares in 8 ways, for example, as 32785518546496 + 88326501575524 = 5725864^2 + 9398218^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121112020122020.

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, 34523186 + ... + 37869174.

It is an arithmetic number, because the mean of its divisors is an integer number (5385697139025).

Almost surely, 2^{121112020122020} is an apocalyptic number.

121112020122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121112020122020 is an abundant number, since it is smaller than the sum of its proper divisors (137401442551180).

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

121112020122020 is a wasteful number, since it uses less digits than its factorization.

121112020122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3375728 (or 3375726 counting only the distinct ones).

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

Adding to 121112020122020 its reverse (20221020211121), we get a palindrome (141333040333141).

The spelling of 121112020122020 in words is "one hundred twenty-one trillion, one hundred twelve billion, twenty million, one hundred twenty-two thousand, twenty".