12001277432 has 32 divisors (see below), whose sum is σ = 24113149200. Its totient is φ = 5579610624.

The previous prime is 12001277423. The next prime is 12001277501. The reversal of 12001277432 is 23477210021.

It is a junction number, because it is equal to n+sod(n) for n = 12001277395 and 12001277404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 520307 + ... + 542882.

Almost surely, 2^12001277432 is an apocalyptic number.

It is an amenable number.

12001277432 is an abundant number, since it is smaller than the sum of its proper divisors (12111871768).

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

12001277432 is a wasteful number, since it uses less digits than its factorization.

12001277432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063295 (or 1063291 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 29.

Adding to 12001277432 its reverse (23477210021), we get a palindrome (35478487453).

The spelling of 12001277432 in words is "twelve billion, one million, two hundred seventy-seven thousand, four hundred thirty-two".