13213451003321 has 4 divisors (see below), whose sum is σ = 13213504337700. Its totient is φ = 13213397668944.

The previous prime is 13213451003309. The next prime is 13213451003387. The reversal of 13213451003321 is 12330015431231.

13213451003321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 5930145465721 + 7283305537600 = 2435189^2 + 2698760^2 .

It is a cyclic number.

It is not a de Polignac number, because 13213451003321 - 2¹⁸ = 13213450741177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13212451003321) 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, 26293826 + ... + 26791643.

It is an arithmetic number, because the mean of its divisors is an integer number (3303376084425).

Almost surely, 2^{13213451003321} is an apocalyptic number.

It is an amenable number.

13213451003321 is a deficient number, since it is larger than the sum of its proper divisors (53334379).

13213451003321 is an equidigital number, since it uses as much as digits as its factorization.

13213451003321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53334378.

The product of its (nonzero) digits is 6480, while the sum is 29.

Adding to 13213451003321 its reverse (12330015431231), we get a palindrome (25543466434552).

The spelling of 13213451003321 in words is "thirteen trillion, two hundred thirteen billion, four hundred fifty-one million, three thousand, three hundred twenty-one".