3111221113 has 32 divisors (see below), whose sum is σ = 4188360960. Its totient is φ = 2231919360.

The previous prime is 3111221107. The next prime is 3111221147.

It is a happy number.

3111221113 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 3111221113 - 2¹⁷ = 3111090041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3111221173) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 393483 + ... + 401311.

It is an arithmetic number, because the mean of its divisors is an integer number (130886280).

Almost surely, 2^3111221113 is an apocalyptic number.

It is an amenable number.

3111221113 is a deficient number, since it is larger than the sum of its proper divisors (1077139847).

3111221113 is a wasteful number, since it uses less digits than its factorization.

3111221113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8257.

The product of its digits is 36, while the sum is 16.

The square root of 3111221113 is about 55778.3211740906. The cubic root of 3111221113 is about 1459.8569186424.

It can be divided in two parts, 31112 and 21113, that added together give a palindrome (52225).

The spelling of 3111221113 in words is "three billion, one hundred eleven million, two hundred twenty-one thousand, one hundred thirteen".