12432440201 has 4 divisors (see below), whose sum is σ = 12433962900. Its totient is φ = 12430917504.

The previous prime is 12432440197. The next prime is 12432440233. The reversal of 12432440201 is 10204423421.

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 5483550601 + 6948889600 = 74051^2 + 83360^2 .

It is a cyclic number.

It is not a de Polignac number, because 12432440201 - 2² = 12432440197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12432440261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 749036 + ... + 765453.

It is an arithmetic number, because the mean of its divisors is an integer number (3108490725).

Almost surely, 2^12432440201 is an apocalyptic number.

It is an amenable number.

12432440201 is a deficient number, since it is larger than the sum of its proper divisors (1522699).

12432440201 is an equidigital number, since it uses as much as digits as its factorization.

12432440201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1522698.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 12432440201 its reverse (10204423421), we get a palindrome (22636863622).

The spelling of 12432440201 in words is "twelve billion, four hundred thirty-two million, four hundred forty thousand, two hundred one".