2331221113 has 4 divisors (see below), whose sum is σ = 2510545828. Its totient is φ = 2151896400.

The previous prime is 2331221099. The next prime is 2331221117. The reversal of 2331221113 is 3111221332.

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 303700329 + 2027520784 = 17427^2 + 45028^2 .

It is a cyclic number.

It is not a de Polignac number, because 2331221113 - 2⁹ = 2331220601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2331221117) 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, 89662338 + ... + 89662363.

It is an arithmetic number, because the mean of its divisors is an integer number (627636457).

Almost surely, 2^2331221113 is an apocalyptic number.

It is an amenable number.

2331221113 is a deficient number, since it is larger than the sum of its proper divisors (179324715).

2331221113 is a wasteful number, since it uses less digits than its factorization.

2331221113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179324714.

The product of its digits is 216, while the sum is 19.

The square root of 2331221113 is about 48282.7206462105. The cubic root of 2331221113 is about 1325.9520605900.

Adding to 2331221113 its reverse (3111221332), we get a palindrome (5442442445).

The spelling of 2331221113 in words is "two billion, three hundred thirty-one million, two hundred twenty-one thousand, one hundred thirteen".