2112012120020 has 72 divisors (see below), whose sum is σ = 5161852182312. Its totient is φ = 722827663360.

The previous prime is 2112012120019. The next prime is 2112012120059. The reversal of 2112012120020 is 200212102112.

It can be written as a sum of positive squares in 4 ways, for example, as 785396523076 + 1326615596944 = 886226^2 + 1151788^2 .

It is a super-2 number, since 2×2112012120020² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2112012119977 and 2112012120004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25627457 + ... + 25709736.

It is an arithmetic number, because the mean of its divisors is an integer number (71692391421).

Almost surely, 2^{2112012120020} is an apocalyptic number.

2112012120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112012120020 is an abundant number, since it is smaller than the sum of its proper divisors (3049840062292).

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

2112012120020 is a wasteful number, since it uses less digits than its factorization.

2112012120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51337241 (or 51337228 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2112012120020 its reverse (200212102112), we get a palindrome (2312224222132).

The spelling of 2112012120020 in words is "two trillion, one hundred twelve billion, twelve million, one hundred twenty thousand, twenty".