13212323123 has 4 divisors (see below), whose sum is σ = 13212574368. Its totient is φ = 13212071880.

The previous prime is 13212323093. The next prime is 13212323203. The reversal of 13212323123 is 32132321231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32132321231 = 17 ⋅1890136543.

It is a cyclic number.

It is not a de Polignac number, because 13212323123 - 2⁸ = 13212322867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13212323023) 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, 13211 + ... + 163092.

It is an arithmetic number, because the mean of its divisors is an integer number (3303143592).

Almost surely, 2^13212323123 is an apocalyptic number.

13212323123 is a deficient number, since it is larger than the sum of its proper divisors (251245).

13212323123 is an equidigital number, since it uses as much as digits as its factorization.

13212323123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251244.

The product of its digits is 1296, while the sum is 23.

Adding to 13212323123 its reverse (32132321231), we get a palindrome (45344644354).

The spelling of 13212323123 in words is "thirteen billion, two hundred twelve million, three hundred twenty-three thousand, one hundred twenty-three".