2122100012121 has 16 divisors (see below), whose sum is σ = 2909173602048. Its totient is φ = 1375134537600.

The previous prime is 2122100012113. The next prime is 2122100012147. The reversal of 2122100012121 is 1212100012212.

It is not a de Polignac number, because 2122100012121 - 2³ = 2122100012113 is a prime.

It is a super-2 number, since 2×2122100012121² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2122100012121.

It is not an unprimeable number, because it can be changed into a prime (2122100012111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31798486 + ... + 31865151.

It is an arithmetic number, because the mean of its divisors is an integer number (181823350128).

Almost surely, 2^{2122100012121} is an apocalyptic number.

It is an amenable number.

2122100012121 is a deficient number, since it is larger than the sum of its proper divisors (787073589927).

2122100012121 is a wasteful number, since it uses less digits than its factorization.

2122100012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63663952.

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

Adding to 2122100012121 its reverse (1212100012212), we get a palindrome (3334200024333).

Subtracting from 2122100012121 its reverse (1212100012212), we obtain a palindrome (909999999909).

The spelling of 2122100012121 in words is "two trillion, one hundred twenty-two billion, one hundred million, twelve thousand, one hundred twenty-one".