13122100123 has 4 divisors (see below), whose sum is σ = 14315018328. Its totient is φ = 11929181920.

The previous prime is 13122100111. The next prime is 13122100133. The reversal of 13122100123 is 32100122131.

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

It is a cyclic number.

It is not a de Polignac number, because 13122100123 - 2¹⁷ = 13121969051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13122100097 and 13122100106.

It is not an unprimeable number, because it can be changed into a prime (13122100133) 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, 596459086 + ... + 596459107.

It is an arithmetic number, because the mean of its divisors is an integer number (3578754582).

Almost surely, 2^13122100123 is an apocalyptic number.

13122100123 is a deficient number, since it is larger than the sum of its proper divisors (1192918205).

13122100123 is a wasteful number, since it uses less digits than its factorization.

13122100123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192918204.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 13122100123 its reverse (32100122131), we get a palindrome (45222222254).

The spelling of 13122100123 in words is "thirteen billion, one hundred twenty-two million, one hundred thousand, one hundred twenty-three".