12001213432 has 32 divisors (see below), whose sum is σ = 24565196880. Its totient is φ = 5463141120.

The previous prime is 12001213391. The next prime is 12001213453. The reversal of 12001213432 is 23431210021.

It is a happy number.

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, 782794 + ... + 797977.

Almost surely, 2^12001213432 is an apocalyptic number.

It is an amenable number.

12001213432 is an abundant number, since it is smaller than the sum of its proper divisors (12563983448).

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

12001213432 is a wasteful number, since it uses less digits than its factorization.

12001213432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580863 (or 1580859 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12001213432 its reverse (23431210021), we get a palindrome (35432423453).

The spelling of 12001213432 in words is "twelve billion, one million, two hundred thirteen thousand, four hundred thirty-two".