13321200123 has 108 divisors (see below), whose sum is σ = 25399867584. Its totient is φ = 6696043200.

The previous prime is 13321200091. The next prime is 13321200163. The reversal of 13321200123 is 32100212331.

It is not a de Polignac number, because 13321200123 - 2⁵ = 13321200091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13321200096 and 13321200105.

It is not an unprimeable number, because it can be changed into a prime (13321200163) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 1650165 + ... + 1658217.

Almost surely, 2^13321200123 is an apocalyptic number.

13321200123 is a deficient number, since it is larger than the sum of its proper divisors (12078667461).

13321200123 is a wasteful number, since it uses less digits than its factorization.

13321200123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8126 (or 8105 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13321200123 its reverse (32100212331), we get a palindrome (45421412454).

It can be divided in two parts, 13321 and 200123, that added together give a square (213444 = 462²).

The spelling of 13321200123 in words is "thirteen billion, three hundred twenty-one million, two hundred thousand, one hundred twenty-three".