113604221 has 2 divisors, whose sum is σ = 113604222. Its totient is φ = 113604220.

The previous prime is 113604203. The next prime is 113604247. The reversal of 113604221 is 122406311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90516196 + 23088025 = 9514^2 + 4805^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113604221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113604193 and 113604202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113604121) 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 as a sum of consecutive naturals, namely, 56802110 + 56802111.

It is an arithmetic number, because the mean of its divisors is an integer number (56802111).

Almost surely, 2^113604221 is an apocalyptic number.

It is an amenable number.

113604221 is a deficient number, since it is larger than the sum of its proper divisors (1).

113604221 is an equidigital number, since it uses as much as digits as its factorization.

113604221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 113604221 is about 10658.5280878740. The cubic root of 113604221 is about 484.3189804156.

The spelling of 113604221 in words is "one hundred thirteen million, six hundred four thousand, two hundred twenty-one".