13311122111123 has 4 divisors (see below), whose sum is σ = 13311161014608. Its totient is φ = 13311083207640.

The previous prime is 13311122111117. The next prime is 13311122111159. The reversal of 13311122111123 is 32111122111331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13311122111123 is a prime.

It is a super-2 number, since 2×13311122111123² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13311122111423) 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, 18933911 + ... + 19624352.

It is an arithmetic number, because the mean of its divisors is an integer number (3327790253652).

Almost surely, 2^{13311122111123} is an apocalyptic number.

13311122111123 is a deficient number, since it is larger than the sum of its proper divisors (38903485).

13311122111123 is an equidigital number, since it uses as much as digits as its factorization.

13311122111123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38903484.

The product of its digits is 216, while the sum is 23.

Adding to 13311122111123 its reverse (32111122111331), we get a palindrome (45422244222454).

The spelling of 13311122111123 in words is "thirteen trillion, three hundred eleven billion, one hundred twenty-two million, one hundred eleven thousand, one hundred twenty-three".