12412401321 has 4 divisors (see below), whose sum is σ = 16549868432. Its totient is φ = 8274934212.

The previous prime is 12412401311. The next prime is 12412401341. The reversal of 12412401321 is 12310421421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12412401321 - 2⁶ = 12412401257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12412401311) 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, 2068733551 + ... + 2068733556.

It is an arithmetic number, because the mean of its divisors is an integer number (4137467108).

Almost surely, 2^12412401321 is an apocalyptic number.

It is an amenable number.

12412401321 is a deficient number, since it is larger than the sum of its proper divisors (4137467111).

12412401321 is an equidigital number, since it uses as much as digits as its factorization.

12412401321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4137467110.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 12412401321 its reverse (12310421421), we get a palindrome (24722822742).

The spelling of 12412401321 in words is "twelve billion, four hundred twelve million, four hundred one thousand, three hundred twenty-one".