113221271 has 2 divisors, whose sum is σ = 113221272. Its totient is φ = 113221270.

The previous prime is 113221253. The next prime is 113221319. The reversal of 113221271 is 172122311.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113221271 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113221201) 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 as a sum of consecutive naturals, namely, 56610635 + 56610636.

It is an arithmetic number, because the mean of its divisors is an integer number (56610636).

Almost surely, 2^113221271 is an apocalyptic number.

113221271 is a deficient number, since it is larger than the sum of its proper divisors (1).

113221271 is an equidigital number, since it uses as much as digits as its factorization.

113221271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 168, while the sum is 20.

The square root of 113221271 is about 10640.5484351137. The cubic root of 113221271 is about 483.7741686585.

Adding to 113221271 its reverse (172122311), we get a palindrome (285343582).

The spelling of 113221271 in words is "one hundred thirteen million, two hundred twenty-one thousand, two hundred seventy-one".