2112120212113 has 4 divisors (see below), whose sum is σ = 2126295515700. Its totient is φ = 2097944908528.

The previous prime is 2112120212107. The next prime is 2112120212141. The reversal of 2112120212113 is 3112120212112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 919466196544 + 1192654015569 = 958888^2 + 1092087^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112120212113 - 2⁹ = 2112120211601 is a prime.

It is a super-2 number, since 2×2112120212113² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2112120212413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7087651570 + ... + 7087651867.

It is an arithmetic number, because the mean of its divisors is an integer number (531573878925).

Almost surely, 2^{2112120212113} is an apocalyptic number.

It is an amenable number.

2112120212113 is a deficient number, since it is larger than the sum of its proper divisors (14175303587).

2112120212113 is a wasteful number, since it uses less digits than its factorization.

2112120212113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14175303586.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 2112120212113 its reverse (3112120212112), we get a palindrome (5224240424225).

Subtracting 2112120212113 from its reverse (3112120212112), we obtain a palindrome (999999999999).

The spelling of 2112120212113 in words is "two trillion, one hundred twelve billion, one hundred twenty million, two hundred twelve thousand, one hundred thirteen".