12433232321 has 4 divisors (see below), whose sum is σ = 12861964500. Its totient is φ = 12004500144.

The previous prime is 12433232311. The next prime is 12433232333. The reversal of 12433232321 is 12323233421.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3106501696 + 9326730625 = 55736^2 + 96575^2 .

It is a cyclic number.

It is not a de Polignac number, because 12433232321 - 2³⁰ = 11359490497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12433232311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214366046 + ... + 214366103.

It is an arithmetic number, because the mean of its divisors is an integer number (3215491125).

Almost surely, 2^12433232321 is an apocalyptic number.

It is an amenable number.

12433232321 is a deficient number, since it is larger than the sum of its proper divisors (428732179).

12433232321 is an equidigital number, since it uses as much as digits as its factorization.

12433232321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428732178.

The product of its digits is 5184, while the sum is 26.

Adding to 12433232321 its reverse (12323233421), we get a palindrome (24756465742).

The spelling of 12433232321 in words is "twelve billion, four hundred thirty-three million, two hundred thirty-two thousand, three hundred twenty-one".