12021431032 has 24 divisors (see below), whose sum is σ = 24407420040. Its totient is φ = 5548352160.

The previous prime is 12021431021. The next prime is 12021431053. The reversal of 12021431032 is 23013412021.

It is a happy number.

12021431032 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 5 ways as a sum of consecutive naturals, for example, 4444444 + ... + 4447147.

It is an arithmetic number, because the mean of its divisors is an integer number (1016975835).

Almost surely, 2^12021431032 is an apocalyptic number.

It is an amenable number.

12021431032 is an abundant number, since it is smaller than the sum of its proper divisors (12385989008).

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

12021431032 is a wasteful number, since it uses less digits than its factorization.

12021431032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8891623 (or 8891606 counting only the distinct ones).

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

Adding to 12021431032 its reverse (23013412021), we get a palindrome (35034843053).

The spelling of 12021431032 in words is "twelve billion, twenty-one million, four hundred thirty-one thousand, thirty-two".