2112120012021 has 32 divisors (see below), whose sum is σ = 3033549066240. Its totient is φ = 1302848717184.

The previous prime is 2112120011891. The next prime is 2112120012073. The reversal of 2112120012021 is 1202100212112.

It is not a de Polignac number, because 2112120012021 - 2¹⁴ = 2112119995637 is a prime.

It is a super-2 number, since 2×2112120012021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112120012221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44444745 + ... + 44492241.

It is an arithmetic number, because the mean of its divisors is an integer number (94798408320).

Almost surely, 2^{2112120012021} is an apocalyptic number.

It is an amenable number.

2112120012021 is a deficient number, since it is larger than the sum of its proper divisors (921429054219).

2112120012021 is a wasteful number, since it uses less digits than its factorization.

2112120012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65705.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2112120012021 its reverse (1202100212112), we get a palindrome (3314220224133).

The spelling of 2112120012021 in words is "two trillion, one hundred twelve billion, one hundred twenty million, twelve thousand, twenty-one".