113121112111 has 16 divisors (see below), whose sum is σ = 131057929728. Its totient is φ = 95635764000.

The previous prime is 113121112109. The next prime is 113121112127. The reversal of 113121112111 is 111211121311.

It is not a de Polignac number, because 113121112111 - 2¹ = 113121112109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113121112151) 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, 118245 + ... + 490126.

It is an arithmetic number, because the mean of its divisors is an integer number (8191120608).

Almost surely, 2^113121112111 is an apocalyptic number.

113121112111 is a deficient number, since it is larger than the sum of its proper divisors (17936817617).

113121112111 is a wasteful number, since it uses less digits than its factorization.

113121112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608742.

The product of its digits is 12, while the sum is 16.

Adding to 113121112111 its reverse (111211121311), we get a palindrome (224332233422).

The spelling of 113121112111 in words is "one hundred thirteen billion, one hundred twenty-one million, one hundred twelve thousand, one hundred eleven".