12365221372 has 24 divisors (see below), whose sum is σ = 24738395360. Its totient is φ = 5297676480.

The previous prime is 12365221369. The next prime is 12365221403. The reversal of 12365221372 is 27312256321.

12365221372 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×12365221372³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19654 + ... + 158482.

Almost surely, 2^12365221372 is an apocalyptic number.

It is an amenable number.

12365221372 is an abundant number, since it is smaller than the sum of its proper divisors (12373173988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12365221372 is a wasteful number, since it uses less digits than its factorization.

12365221372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142021 (or 142019 counting only the distinct ones).

The product of its digits is 30240, while the sum is 34.

Adding to 12365221372 its reverse (27312256321), we get a palindrome (39677477693).

The spelling of 12365221372 in words is "twelve billion, three hundred sixty-five million, two hundred twenty-one thousand, three hundred seventy-two".