2112011121 has 16 divisors (see below), whose sum is σ = 3171115008. Its totient is φ = 1238715600.

The previous prime is 2112011093. The next prime is 2112011123. The reversal of 2112011121 is 1211102112.

It is not a de Polignac number, because 2112011121 - 2⁵ = 2112011089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2112011097 and 2112011106.

It is not an unprimeable number, because it can be changed into a prime (2112011123) 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, 1031241 + ... + 1033286.

It is an arithmetic number, because the mean of its divisors is an integer number (198194688).

Almost surely, 2^2112011121 is an apocalyptic number.

It is an amenable number.

2112011121 is a deficient number, since it is larger than the sum of its proper divisors (1059103887).

2112011121 is a wasteful number, since it uses less digits than its factorization.

2112011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064572.

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 2112011121 is about 45956.6221669957. The cubic root of 2112011121 is about 1283.0159839508.

Adding to 2112011121 its reverse (1211102112), we get a palindrome (3323113233).

Subtracting from 2112011121 its reverse (1211102112), we obtain a palindrome (900909009).

The spelling of 2112011121 in words is "two billion, one hundred twelve million, eleven thousand, one hundred twenty-one".