13023221123 has 4 divisors (see below), whose sum is σ = 14207150328. Its totient is φ = 11839291920.

The previous prime is 13023221111. The next prime is 13023221131. The reversal of 13023221123 is 32112232031.

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 13023221123 - 2¹² = 13023217027 is a prime.

It is a super-2 number, since 2×13023221123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13023221095 and 13023221104.

It is not an unprimeable number, because it can be changed into a prime (13023221143) 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, 591964586 + ... + 591964607.

It is an arithmetic number, because the mean of its divisors is an integer number (3551787582).

Almost surely, 2^13023221123 is an apocalyptic number.

13023221123 is a deficient number, since it is larger than the sum of its proper divisors (1183929205).

13023221123 is a wasteful number, since it uses less digits than its factorization.

13023221123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183929204.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13023221123 its reverse (32112232031), we get a palindrome (45135453154).

The spelling of 13023221123 in words is "thirteen billion, twenty-three million, two hundred twenty-one thousand, one hundred twenty-three".