12321421332 has 24 divisors (see below), whose sum is σ = 31363618272. Its totient is φ = 3733764000.

The previous prime is 12321421327. The next prime is 12321421363. The reversal of 12321421332 is 23312412321.

It is a nude number because it is divisible by every one of its digits.

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, 46671919 + ... + 46672182.

It is an arithmetic number, because the mean of its divisors is an integer number (1306817428).

Almost surely, 2^12321421332 is an apocalyptic number.

12321421332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12321421332 is an abundant number, since it is smaller than the sum of its proper divisors (19042196940).

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

12321421332 is a wasteful number, since it uses less digits than its factorization.

12321421332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93344119 (or 93344117 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

Adding to 12321421332 its reverse (23312412321), we get a palindrome (35633833653).

The spelling of 12321421332 in words is "twelve billion, three hundred twenty-one million, four hundred twenty-one thousand, three hundred thirty-two".