111213212331 has 16 divisors (see below), whose sum is σ = 160010816000. Its totient is φ = 68301735840.

The previous prime is 111213212269. The next prime is 111213212333. The reversal of 111213212331 is 133212312111.

It is not a de Polignac number, because 111213212331 - 2⁹ = 111213211819 is a prime.

It is a super-2 number, since 2×111213212331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111213212298 and 111213212307.

It is not an unprimeable number, because it can be changed into a prime (111213212333) 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, 2837875 + ... + 2876796.

It is an arithmetic number, because the mean of its divisors is an integer number (10000676000).

Almost surely, 2^111213212331 is an apocalyptic number.

111213212331 is a deficient number, since it is larger than the sum of its proper divisors (48797603669).

111213212331 is a wasteful number, since it uses less digits than its factorization.

111213212331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5715186.

The product of its digits is 216, while the sum is 21.

Adding to 111213212331 its reverse (133212312111), we get a palindrome (244425524442).

The spelling of 111213212331 in words is "one hundred eleven billion, two hundred thirteen million, two hundred twelve thousand, three hundred thirty-one".