11598221 has 2 divisors, whose sum is σ = 11598222. Its totient is φ = 11598220.

The previous prime is 11598179. The next prime is 11598229. The reversal of 11598221 is 12289511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11464996 + 133225 = 3386^2 + 365^2 .

It is a cyclic number.

It is not a de Polignac number, because 11598221 - 2⁶ = 11598157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11598229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5799110 + 5799111.

It is an arithmetic number, because the mean of its divisors is an integer number (5799111).

Almost surely, 2^11598221 is an apocalyptic number.

It is an amenable number.

11598221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11598221 is an equidigital number, since it uses as much as digits as its factorization.

11598221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 29.

The square root of 11598221 is about 3405.6160969786. The cubic root of 11598221 is about 226.3586663982.

The spelling of 11598221 in words is "eleven million, five hundred ninety-eight thousand, two hundred twenty-one".