13213233020321 has 4 divisors (see below), whose sum is σ = 13908666337200. Its totient is φ = 12517799703444.

The previous prime is 13213233020311. The next prime is 13213233020341. The reversal of 13213233020321 is 12302033231231.

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 13213233020321 - 2¹⁰ = 13213233019297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13213233020311) 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, 347716658411 + ... + 347716658448.

It is an arithmetic number, because the mean of its divisors is an integer number (3477166584300).

Almost surely, 2^{13213233020321} is an apocalyptic number.

It is an amenable number.

13213233020321 is a deficient number, since it is larger than the sum of its proper divisors (695433316879).

13213233020321 is an equidigital number, since it uses as much as digits as its factorization.

13213233020321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695433316878.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 13213233020321 its reverse (12302033231231), we get a palindrome (25515266251552).

The spelling of 13213233020321 in words is "thirteen trillion, two hundred thirteen billion, two hundred thirty-three million, twenty thousand, three hundred twenty-one".