12321432001 has 2 divisors, whose sum is σ = 12321432002. Its totient is φ = 12321432000.

The previous prime is 12321431981. The next prime is 12321432059. The reversal of 12321432001 is 10023412321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9058280625 + 3263151376 = 95175^2 + 57124^2 .

It is a cyclic number.

It is not a de Polignac number, because 12321432001 - 2⁷ = 12321431873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12321432001.

It is not a weakly prime, because it can be changed into another prime (12321432061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160716000 + 6160716001.

It is an arithmetic number, because the mean of its divisors is an integer number (6160716001).

Almost surely, 2^12321432001 is an apocalyptic number.

It is an amenable number.

12321432001 is a deficient number, since it is larger than the sum of its proper divisors (1).

12321432001 is an equidigital number, since it uses as much as digits as its factorization.

12321432001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12321432001 its reverse (10023412321), we get a palindrome (22344844322).

The spelling of 12321432001 in words is "twelve billion, three hundred twenty-one million, four hundred thirty-two thousand, one".