111312213111 has 48 divisors (see below), whose sum is σ = 176420295168. Its totient is φ = 67071110400.

The previous prime is 111312213091. The next prime is 111312213137.

111312213111 is a `hidden beast` number, since 1 + 1 + 131 + 221 + 311 + 1 = 666.

111312213111 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 111312213111 - 2⁷ = 111312212983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111312213151) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12239676 + ... + 12248766.

It is an arithmetic number, because the mean of its divisors is an integer number (3675422816).

Almost surely, 2^111312213111 is an apocalyptic number.

111312213111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111312213111 is a deficient number, since it is larger than the sum of its proper divisors (65108082057).

111312213111 is a wasteful number, since it uses less digits than its factorization.

111312213111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9812 (or 9809 counting only the distinct ones).

The product of its digits is 36, while the sum is 18.

It can be divided in two parts, 111312 and 213111, that added together give a palindrome (324423).

The spelling of 111312213111 in words is "one hundred eleven billion, three hundred twelve million, two hundred thirteen thousand, one hundred eleven".