113221397 has 2 divisors, whose sum is σ = 113221398. Its totient is φ = 113221396.

The previous prime is 113221391. The next prime is 113221417. The reversal of 113221397 is 793122311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65141041 + 48080356 = 8071^2 + 6934^2 .

It is an emirp because it is prime and its reverse (793122311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113221397 - 2²⁰ = 112172821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113221391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56610698 + 56610699.

It is an arithmetic number, because the mean of its divisors is an integer number (56610699).

Almost surely, 2^113221397 is an apocalyptic number.

It is an amenable number.

113221397 is a deficient number, since it is larger than the sum of its proper divisors (1).

113221397 is an equidigital number, since it uses as much as digits as its factorization.

113221397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 29.

The square root of 113221397 is about 10640.5543558595. The cubic root of 113221397 is about 483.7743481169.

The spelling of 113221397 in words is "one hundred thirteen million, two hundred twenty-one thousand, three hundred ninety-seven".