221113102321313 has 4 divisors (see below), whose sum is σ = 221212657975188. Its totient is φ = 221013546667440.

The previous prime is 221113102321289. The next prime is 221113102321327. The reversal of 221113102321313 is 313123201311122.

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 128385600963169 + 92727501358144 = 11330737^2 + 9629512^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221113102321313 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221113102321373) 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, 49777823606 + ... + 49777828047.

It is an arithmetic number, because the mean of its divisors is an integer number (55303164493797).

Almost surely, 2^{221113102321313} is an apocalyptic number.

It is an amenable number.

221113102321313 is a deficient number, since it is larger than the sum of its proper divisors (99555653875).

221113102321313 is an equidigital number, since it uses as much as digits as its factorization.

221113102321313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99555653874.

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 221113102321313 its reverse (313123201311122), we get a palindrome (534236303632435).

The spelling of 221113102321313 in words is "two hundred twenty-one trillion, one hundred thirteen billion, one hundred two million, three hundred twenty-one thousand, three hundred thirteen".