111123133213 has 4 divisors (see below), whose sum is σ = 112201998688. Its totient is φ = 110044267740.

The previous prime is 111123133193. The next prime is 111123133267. The reversal of 111123133213 is 312331321111.

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 a cyclic number.

It is not a de Polignac number, because 111123133213 - 2²⁵ = 111089578781 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 (111120133213) 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, 539432583 + ... + 539432788.

It is an arithmetic number, because the mean of its divisors is an integer number (28050499672).

Almost surely, 2^111123133213 is an apocalyptic number.

It is an amenable number.

111123133213 is a deficient number, since it is larger than the sum of its proper divisors (1078865475).

111123133213 is a wasteful number, since it uses less digits than its factorization.

111123133213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078865474.

The product of its digits is 324, while the sum is 22.

Adding to 111123133213 its reverse (312331321111), we get a palindrome (423454454324).

The spelling of 111123133213 in words is "one hundred eleven billion, one hundred twenty-three million, one hundred thirty-three thousand, two hundred thirteen".