111312213213 has 4 divisors (see below), whose sum is σ = 148416284288. Its totient is φ = 74208142140.

The previous prime is 111312213163. The next prime is 111312213227. The reversal of 111312213213 is 312312213111.

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.

It is not a de Polignac number, because 111312213213 - 2¹⁴ = 111312196829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111312213213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111312213253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18552035533 + ... + 18552035538.

It is an arithmetic number, because the mean of its divisors is an integer number (37104071072).

Almost surely, 2^111312213213 is an apocalyptic number.

It is an amenable number.

111312213213 is a deficient number, since it is larger than the sum of its proper divisors (37104071075).

111312213213 is an equidigital number, since it uses as much as digits as its factorization.

111312213213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37104071074.

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

Adding to 111312213213 its reverse (312312213111), we get a palindrome (423624426324).

The spelling of 111312213213 in words is "one hundred eleven billion, three hundred twelve million, two hundred thirteen thousand, two hundred thirteen".