113221021111 has 4 divisors (see below), whose sum is σ = 123513841224. Its totient is φ = 102928201000.

The previous prime is 113221021103. The next prime is 113221021117. The reversal of 113221021111 is 111120122311.

It is a happy number.

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 113221021111 - 2³ = 113221021103 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 (113221021117) 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, 5146410040 + ... + 5146410061.

It is an arithmetic number, because the mean of its divisors is an integer number (30878460306).

Almost surely, 2^113221021111 is an apocalyptic number.

113221021111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

113221021111 is a deficient number, since it is larger than the sum of its proper divisors (10292820113).

113221021111 is a wasteful number, since it uses less digits than its factorization.

113221021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10292820112.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 113221021111 its reverse (111120122311), we get a palindrome (224341143422).

The spelling of 113221021111 in words is "one hundred thirteen billion, two hundred twenty-one million, twenty-one thousand, one hundred eleven".