1313023102221 has 4 divisors (see below), whose sum is σ = 1750697469632. Its totient is φ = 875348734812.

The previous prime is 1313023102217. The next prime is 1313023102243. The reversal of 1313023102221 is 1222013203131.

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 1313023102221 - 2² = 1313023102217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313023102201) 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, 218837183701 + ... + 218837183706.

It is an arithmetic number, because the mean of its divisors is an integer number (437674367408).

Almost surely, 2^{1313023102221} is an apocalyptic number.

It is an amenable number.

1313023102221 is a deficient number, since it is larger than the sum of its proper divisors (437674367411).

1313023102221 is an equidigital number, since it uses as much as digits as its factorization.

1313023102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437674367410.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1313023102221 its reverse (1222013203131), we get a palindrome (2535036305352).

The spelling of 1313023102221 in words is "one trillion, three hundred thirteen billion, twenty-three million, one hundred two thousand, two hundred twenty-one".