12021131232 has 108 divisors (see below), whose sum is σ = 37575457920. Its totient is φ = 3642756480.

The previous prime is 12021131209. The next prime is 12021131251. The reversal of 12021131232 is 23213112021.

12021131232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 17 ways as a sum of consecutive naturals, for example, 137632 + ... + 207327.

Almost surely, 2^12021131232 is an apocalyptic number.

12021131232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12021131232 is an abundant number, since it is smaller than the sum of its proper divisors (25554326688).

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

12021131232 is a wasteful number, since it uses less digits than its factorization.

12021131232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344997 (or 344975 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12021131232 its reverse (23213112021), we get a palindrome (35234243253).

The spelling of 12021131232 in words is "twelve billion, twenty-one million, one hundred thirty-one thousand, two hundred thirty-two".