111013231213 has 4 divisors (see below), whose sum is σ = 111103560540. Its totient is φ = 110922901888.

The previous prime is 111013231211. The next prime is 111013231223. The reversal of 111013231213 is 312132310111.

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 104253431689 + 6759799524 = 322883^2 + 82218^2 .

It is a cyclic number.

It is not a de Polignac number, because 111013231213 - 2¹ = 111013231211 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 (111013231211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45162820 + ... + 45165277.

It is an arithmetic number, because the mean of its divisors is an integer number (27775890135).

Almost surely, 2^111013231213 is an apocalyptic number.

It is an amenable number.

111013231213 is a deficient number, since it is larger than the sum of its proper divisors (90329327).

111013231213 is an equidigital number, since it uses as much as digits as its factorization.

111013231213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90329326.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 111013231213 its reverse (312132310111), we get a palindrome (423145541324).

The spelling of 111013231213 in words is "one hundred eleven billion, thirteen million, two hundred thirty-one thousand, two hundred thirteen".