12432332021 has 8 divisors (see below), whose sum is σ = 12494775864. Its totient is φ = 12370034880.

The previous prime is 12432332009. The next prime is 12432332023. The reversal of 12432332021 is 12023323421.

12432332021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 357399025 + 12074932996 = 18905^2 + 109886^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12432332021 - 2¹⁸ = 12432069877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12432332023) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 135251 + ... + 207743.

It is an arithmetic number, because the mean of its divisors is an integer number (1561846983).

Almost surely, 2^12432332021 is an apocalyptic number.

It is an amenable number.

12432332021 is a deficient number, since it is larger than the sum of its proper divisors (62443843).

12432332021 is an equidigital number, since it uses as much as digits as its factorization.

12432332021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73351.

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

Adding to 12432332021 its reverse (12023323421), we get a palindrome (24455655442).

The spelling of 12432332021 in words is "twelve billion, four hundred thirty-two million, three hundred thirty-two thousand, twenty-one".