113012221 has 4 divisors (see below), whose sum is σ = 129156832. Its totient is φ = 96867612.

The previous prime is 113012201. The next prime is 113012231. The reversal of 113012221 is 122210311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 113012221 - 2⁵ = 113012189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113012201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8072295 + ... + 8072308.

It is an arithmetic number, because the mean of its divisors is an integer number (32289208).

Almost surely, 2^113012221 is an apocalyptic number.

It is an amenable number.

113012221 is a deficient number, since it is larger than the sum of its proper divisors (16144611).

113012221 is an equidigital number, since it uses as much as digits as its factorization.

113012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16144610.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 113012221 is about 10630.7206246802. The cubic root of 113012221 is about 483.4762408444.

Adding to 113012221 its reverse (122210311), we get a palindrome (235222532).

The spelling of 113012221 in words is "one hundred thirteen million, twelve thousand, two hundred twenty-one".