113102221 has 4 divisors (see below), whose sum is σ = 113428512.
Its totient is φ = 112775932.
The previous prime is 113102153. The next prime is 113102239. The reversal of 113102221 is 122201311.
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 113102221 - 213 = 113094029 is a prime.
It is a super-2 number, since 2×1131022212 = 25584224790265682, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (113102251) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162625 + ... + 163318.
It is an arithmetic number, because the mean of its divisors is an integer number (28357128).
Almost surely, 2113102221 is an apocalyptic number.
It is an amenable number.
113102221 is a deficient number, since it is larger than the sum of its proper divisors (326291).
113102221 is an equidigital number, since it uses as much as digits as its factorization.
113102221 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 326290.
The product of its (nonzero) digits is 24, while the sum is 13.
The square root of 113102221 is about 10634.9527972624.
The cubic root of 113102221 is about 483.6045494337.
Adding to 113102221 its reverse (122201311), we get a palindrome (235303532).
It can be divided in two parts, 11310 and 2221, that added together give a palindrome (13531).
The spelling of 113102221 in words is "one hundred thirteen million, one hundred two thousand, two hundred twenty-one".