8885221 has 2 divisors, whose sum is σ = 8885222. Its totient is φ = 8885220.

The previous prime is 8885207. The next prime is 8885231. The reversal of 8885221 is 1225888.

It is a happy number.

8885221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8850625 + 34596 = 2975^2 + 186^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8885221 is a prime.

It is a pancake number, because a pancake can be divided into 8885221 parts by 4215 straight cuts.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8885231) 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, 4442610 + 4442611.

It is an arithmetic number, because the mean of its divisors is an integer number (4442611).

Almost surely, 2^8885221 is an apocalyptic number.

It is an amenable number.

8885221 is a deficient number, since it is larger than the sum of its proper divisors (1).

8885221 is an equidigital number, since it uses as much as digits as its factorization.

8885221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10240, while the sum is 34.

The square root of 8885221 is about 2980.8087828641. The cubic root of 8885221 is about 207.1203373514.

The spelling of 8885221 in words is "eight million, eight hundred eighty-five thousand, two hundred twenty-one".