112556221 has 4 divisors (see below), whose sum is σ = 116437500. Its totient is φ = 108674944.

The previous prime is 112556207. The next prime is 112556233. The reversal of 112556221 is 122655211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122655211 = 7 ⋅17522173.

It can be written as a sum of positive squares in 2 ways, for example, as 81252196 + 31304025 = 9014^2 + 5595^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112556221 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 (112556251) 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, 1940596 + ... + 1940653.

It is an arithmetic number, because the mean of its divisors is an integer number (29109375).

Almost surely, 2^112556221 is an apocalyptic number.

It is an amenable number.

112556221 is a deficient number, since it is larger than the sum of its proper divisors (3881279).

112556221 is an equidigital number, since it uses as much as digits as its factorization.

112556221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3881278.

The product of its digits is 1200, while the sum is 25.

The square root of 112556221 is about 10609.2516701226. The cubic root of 112556221 is about 482.8250948792.

The spelling of 112556221 in words is "one hundred twelve million, five hundred fifty-six thousand, two hundred twenty-one".