13220112123 has 12 divisors (see below), whose sum is σ = 19419374520. Its totient is φ = 8664027936.

The previous prime is 13220112083. The next prime is 13220112127. The reversal of 13220112123 is 32121102231.

It is not a de Polignac number, because 13220112123 - 2²⁰ = 13219063547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13220112096 and 13220112105.

It is not an unprimeable number, because it can be changed into a prime (13220112127) 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 11 ways as a sum of consecutive naturals, for example, 12447786 + ... + 12448847.

It is an arithmetic number, because the mean of its divisors is an integer number (1618281210).

Almost surely, 2^13220112123 is an apocalyptic number.

13220112123 is a deficient number, since it is larger than the sum of its proper divisors (6199262397).

13220112123 is a wasteful number, since it uses less digits than its factorization.

13220112123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24896698 (or 24896695 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 13220112123 its reverse (32121102231), we get a palindrome (45341214354).

The spelling of 13220112123 in words is "thirteen billion, two hundred twenty million, one hundred twelve thousand, one hundred twenty-three".