113112423121 has 4 divisors (see below), whose sum is σ = 113264661312. Its totient is φ = 112960184932.

The previous prime is 113112423119. The next prime is 113112423161. The reversal of 113112423121 is 121324211311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121324211311 = 509 ⋅238357979.

It is a cyclic number.

It is not a de Polignac number, because 113112423121 - 2¹ = 113112423119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113112423092 and 113112423101.

It is not an unprimeable number, because it can be changed into a prime (113112423161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76117981 + ... + 76119466.

It is an arithmetic number, because the mean of its divisors is an integer number (28316165328).

Almost surely, 2^113112423121 is an apocalyptic number.

It is an amenable number.

113112423121 is a deficient number, since it is larger than the sum of its proper divisors (152238191).

113112423121 is an equidigital number, since it uses as much as digits as its factorization.

113112423121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152238190.

The product of its digits is 288, while the sum is 22.

Adding to 113112423121 its reverse (121324211311), we get a palindrome (234436634432).

The spelling of 113112423121 in words is "one hundred thirteen billion, one hundred twelve million, four hundred twenty-three thousand, one hundred twenty-one".