113313111213221 has 4 divisors (see below), whose sum is σ = 113313133887744. Its totient is φ = 113313088538700.

The previous prime is 113313111213173. The next prime is 113313111213293. The reversal of 113313111213221 is 122312111313311.

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 113313111213221 - 2⁴² = 108915064702117 is a prime.

It is a super-2 number, since 2×113313111213221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113313111213521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183365 + ... + 15055226.

It is an arithmetic number, because the mean of its divisors is an integer number (28328283471936).

Almost surely, 2^{113313111213221} is an apocalyptic number.

It is an amenable number.

113313111213221 is a deficient number, since it is larger than the sum of its proper divisors (22674523).

113313111213221 is an equidigital number, since it uses as much as digits as its factorization.

113313111213221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22674522.

The product of its digits is 648, while the sum is 26.

Adding to 113313111213221 its reverse (122312111313311), we get a palindrome (235625222526532).

The spelling of 113313111213221 in words is "one hundred thirteen trillion, three hundred thirteen billion, one hundred eleven million, two hundred thirteen thousand, two hundred twenty-one".