113221231111 has 4 divisors (see below), whose sum is σ = 113327145400. Its totient is φ = 113115316824.

The previous prime is 113221231093. The next prime is 113221231147. The reversal of 113221231111 is 111132122311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 113221231111 - 2⁹ = 113221230599 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 (113221231171) 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, 52955541 + ... + 52957678.

It is an arithmetic number, because the mean of its divisors is an integer number (28331786350).

Almost surely, 2^113221231111 is an apocalyptic number.

113221231111 is a deficient number, since it is larger than the sum of its proper divisors (105914289).

113221231111 is a wasteful number, since it uses less digits than its factorization.

113221231111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105914288.

The product of its digits is 72, while the sum is 19.

Adding to 113221231111 its reverse (111132122311), we get a palindrome (224353353422).

The spelling of 113221231111 in words is "one hundred thirteen billion, two hundred twenty-one million, two hundred thirty-one thousand, one hundred eleven".