113221151 has 4 divisors (see below), whose sum is σ = 113252304. Its totient is φ = 113190000.

The previous prime is 113221127. The next prime is 113221181. The reversal of 113221151 is 151122311.

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 113221151 - 2¹⁰ = 113220127 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 (113221181) 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, 9275 + ... + 17676.

It is an arithmetic number, because the mean of its divisors is an integer number (28313076).

Almost surely, 2^113221151 is an apocalyptic number.

113221151 is a deficient number, since it is larger than the sum of its proper divisors (31153).

113221151 is an equidigital number, since it uses as much as digits as its factorization.

113221151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31152.

The product of its digits is 60, while the sum is 17.

The square root of 113221151 is about 10640.5427963051. The cubic root of 113221151 is about 483.7739977456.

Adding to 113221151 its reverse (151122311), we get a palindrome (264343462).

The spelling of 113221151 in words is "one hundred thirteen million, two hundred twenty-one thousand, one hundred fifty-one".