8695185221 has 2 divisors, whose sum is σ = 8695185222. Its totient is φ = 8695185220.

The previous prime is 8695185209. The next prime is 8695185241. The reversal of 8695185221 is 1225815968.

8695185221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8188440100 + 506745121 = 90490^2 + 22511^2 .

It is a cyclic number.

It is not a de Polignac number, because 8695185221 - 2²⁶ = 8628076357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8695185241) 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, 4347592610 + 4347592611.

It is an arithmetic number, because the mean of its divisors is an integer number (4347592611).

Almost surely, 2^8695185221 is an apocalyptic number.

It is an amenable number.

8695185221 is a deficient number, since it is larger than the sum of its proper divisors (1).

8695185221 is an equidigital number, since it uses as much as digits as its factorization.

8695185221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 345600, while the sum is 47.

The square root of 8695185221 is about 93247.9770343572. The cubic root of 8695185221 is about 2056.3306360522.

The spelling of 8695185221 in words is "eight billion, six hundred ninety-five million, one hundred eighty-five thousand, two hundred twenty-one".