13112122123 has 4 divisors (see below), whose sum is σ = 13466503840. Its totient is φ = 12757740408.

The previous prime is 13112122109. The next prime is 13112122157. The reversal of 13112122123 is 32122121131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32122121131 = 109 ⋅294698359.

It is a cyclic number.

It is not a de Polignac number, because 13112122123 - 2⁹ = 13112121611 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 13112122123.

It is not an unprimeable number, because it can be changed into a prime (13112122183) 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, 177190803 + ... + 177190876.

It is an arithmetic number, because the mean of its divisors is an integer number (3366625960).

Almost surely, 2^13112122123 is an apocalyptic number.

13112122123 is a deficient number, since it is larger than the sum of its proper divisors (354381717).

13112122123 is an equidigital number, since it uses as much as digits as its factorization.

13112122123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354381716.

The product of its digits is 144, while the sum is 19.

Adding to 13112122123 its reverse (32122121131), we get a palindrome (45234243254).

The spelling of 13112122123 in words is "thirteen billion, one hundred twelve million, one hundred twenty-two thousand, one hundred twenty-three".