113597221 has 2 divisors, whose sum is σ = 113597222. Its totient is φ = 113597220.

The previous prime is 113597201. The next prime is 113597233. The reversal of 113597221 is 122795311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89094721 + 24502500 = 9439^2 + 4950^2 .

It is a cyclic number.

It is not a de Polignac number, because 113597221 - 2¹⁵ = 113564453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113597201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56798610 + 56798611.

It is an arithmetic number, because the mean of its divisors is an integer number (56798611).

Almost surely, 2^113597221 is an apocalyptic number.

It is an amenable number.

113597221 is a deficient number, since it is larger than the sum of its proper divisors (1).

113597221 is an equidigital number, since it uses as much as digits as its factorization.

113597221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 31.

The square root of 113597221 is about 10658.1997072676. The cubic root of 113597221 is about 484.3090327145.

The spelling of 113597221 in words is "one hundred thirteen million, five hundred ninety-seven thousand, two hundred twenty-one".