13312002221321 has 4 divisors (see below), whose sum is σ = 14012633917200. Its totient is φ = 12611370525444.

The previous prime is 13312002221317. The next prime is 13312002221333. The reversal of 13312002221321 is 12312220021331.

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 a cyclic number.

It is not a de Polignac number, because 13312002221321 - 2² = 13312002221317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13312002221351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350315847911 + ... + 350315847948.

It is an arithmetic number, because the mean of its divisors is an integer number (3503158479300).

Almost surely, 2^{13312002221321} is an apocalyptic number.

It is an amenable number.

13312002221321 is a deficient number, since it is larger than the sum of its proper divisors (700631695879).

13312002221321 is an equidigital number, since it uses as much as digits as its factorization.

13312002221321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700631695878.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 13312002221321 its reverse (12312220021331), we get a palindrome (25624222242652).

The spelling of 13312002221321 in words is "thirteen trillion, three hundred twelve billion, two million, two hundred twenty-one thousand, three hundred twenty-one".