12365167421 has 16 divisors (see below), whose sum is σ = 12650373120. Its totient is φ = 12084312240.

The previous prime is 12365167417. The next prime is 12365167433. The reversal of 12365167421 is 12476156321.

It is a cyclic number.

It is not a de Polignac number, because 12365167421 - 2² = 12365167417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12365167411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2309870 + ... + 2315216.

It is an arithmetic number, because the mean of its divisors is an integer number (790648320).

Almost surely, 2^12365167421 is an apocalyptic number.

It is an amenable number.

12365167421 is a deficient number, since it is larger than the sum of its proper divisors (285205699).

12365167421 is a wasteful number, since it uses less digits than its factorization.

12365167421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5744.

The product of its digits is 60480, while the sum is 38.

The spelling of 12365167421 in words is "twelve billion, three hundred sixty-five million, one hundred sixty-seven thousand, four hundred twenty-one".