12772724123 has 4 divisors (see below), whose sum is σ = 12774746040. Its totient is φ = 12770702208.

The previous prime is 12772724119. The next prime is 12772724201. The reversal of 12772724123 is 32142727721.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32142727721 = 13 ⋅2472517517.

It is a cyclic number.

It is not a de Polignac number, because 12772724123 - 2² = 12772724119 is a prime.

It is a super-2 number, since 2×12772724123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12772724023) 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, 1001453 + ... + 1014126.

It is an arithmetic number, because the mean of its divisors is an integer number (3193686510).

Almost surely, 2^12772724123 is an apocalyptic number.

12772724123 is a deficient number, since it is larger than the sum of its proper divisors (2021917).

12772724123 is an equidigital number, since it uses as much as digits as its factorization.

12772724123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021916.

The product of its digits is 65856, while the sum is 38.

The spelling of 12772724123 in words is "twelve billion, seven hundred seventy-two million, seven hundred twenty-four thousand, one hundred twenty-three".