13023220123 has 4 divisors (see below), whose sum is σ = 13039768840. Its totient is φ = 13006671408.

The previous prime is 13023220121. The next prime is 13023220163. The reversal of 13023220123 is 32102232031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32102232031 = 120293 ⋅266867.

It is a cyclic number.

It is not a de Polignac number, because 13023220123 - 2¹ = 13023220121 is a prime.

It is a super-2 number, since 2×13023220123² (a number of 21 digits) contains 22 as substring.

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 13023220123.

It is not an unprimeable number, because it can be changed into a prime (13023220121) 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, 8273178 + ... + 8274751.

It is an arithmetic number, because the mean of its divisors is an integer number (3259942210).

Almost surely, 2^13023220123 is an apocalyptic number.

13023220123 is a deficient number, since it is larger than the sum of its proper divisors (16548717).

13023220123 is an equidigital number, since it uses as much as digits as its factorization.

13023220123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16548716.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 13023220123 its reverse (32102232031), we get a palindrome (45125452154).

The spelling of 13023220123 in words is "thirteen billion, twenty-three million, two hundred twenty thousand, one hundred twenty-three".