12404400321 has 8 divisors (see below), whose sum is σ = 16541578240. Its totient is φ = 8268411312.

The previous prime is 12404400299. The next prime is 12404400329. The reversal of 12404400321 is 12300440421.

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

It is not a de Polignac number, because 12404400321 - 2⁷ = 12404400193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12404400329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272590 + ... + 314823.

It is an arithmetic number, because the mean of its divisors is an integer number (2067697280).

Almost surely, 2^12404400321 is an apocalyptic number.

It is an amenable number.

12404400321 is a deficient number, since it is larger than the sum of its proper divisors (4137177919).

12404400321 is an equidigital number, since it uses as much as digits as its factorization.

12404400321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594455.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 12404400321 its reverse (12300440421), we get a palindrome (24704840742).

The spelling of 12404400321 in words is "twelve billion, four hundred four million, four hundred thousand, three hundred twenty-one".