3113211233221 has 4 divisors (see below), whose sum is σ = 3113225387244. Its totient is φ = 3113197079200.

The previous prime is 3113211233189. The next prime is 3113211233227. The reversal of 3113211233221 is 1223321123113.

3113211233221 is digitally balanced in base 3, 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 2371941892321 + 741269340900 = 1540111^2 + 860970^2 .

It is a cyclic number.

It is not a de Polignac number, because 3113211233221 - 2⁵ = 3113211233189 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 (3113211233227) 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, 6741790 + ... + 7188751.

It is an arithmetic number, because the mean of its divisors is an integer number (778306346811).

Almost surely, 2^{3113211233221} is an apocalyptic number.

It is an amenable number.

3113211233221 is a deficient number, since it is larger than the sum of its proper divisors (14154023).

3113211233221 is a wasteful number, since it uses less digits than its factorization.

3113211233221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14154022.

The product of its digits is 1296, while the sum is 25.

Adding to 3113211233221 its reverse (1223321123113), we get a palindrome (4336532356334).

The spelling of 3113211233221 in words is "three trillion, one hundred thirteen billion, two hundred eleven million, two hundred thirty-three thousand, two hundred twenty-one".