12332320421 has 6 divisors (see below), whose sum is σ = 13100423730. Its totient is φ = 11606889536.

The previous prime is 12332320391. The next prime is 12332320433. The reversal of 12332320421 is 12402323321.

It can be written as a sum of positive squares in 3 ways, for example, as 2229256225 + 10103064196 = 47215^2 + 100514^2 .

It is not a de Polignac number, because 12332320421 - 2¹⁴ = 12332304037 is a prime.

It is a super-2 number, since 2×12332320421² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12332320621) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21335906 + ... + 21336483.

It is an arithmetic number, because the mean of its divisors is an integer number (2183403955).

Almost surely, 2^12332320421 is an apocalyptic number.

It is an amenable number.

12332320421 is a deficient number, since it is larger than the sum of its proper divisors (768103309).

12332320421 is an equidigital number, since it uses as much as digits as its factorization.

12332320421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42672423 (or 42672406 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 12332320421 its reverse (12402323321), we get a palindrome (24734643742).

The spelling of 12332320421 in words is "twelve billion, three hundred thirty-two million, three hundred twenty thousand, four hundred twenty-one".