8810189221 has 8 divisors (see below), whose sum is σ = 8903666520. Its totient is φ = 8716766208.

The previous prime is 8810189209. The next prime is 8810189231. The reversal of 8810189221 is 1229810188.

It can be written as a sum of positive squares in 4 ways, for example, as 387538596 + 8422650625 = 19686^2 + 91775^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8810189221 - 2¹¹ = 8810187173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8810189231) 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 in 7 ways as a sum of consecutive naturals, for example, 369555 + ... + 392671.

It is an arithmetic number, because the mean of its divisors is an integer number (1112958315).

Almost surely, 2^8810189221 is an apocalyptic number.

It is an amenable number.

8810189221 is a deficient number, since it is larger than the sum of its proper divisors (93477299).

8810189221 is a wasteful number, since it uses less digits than its factorization.

8810189221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27143.

The product of its (nonzero) digits is 18432, while the sum is 40.

The square root of 8810189221 is about 93862.6082154124. The cubic root of 8810189221 is about 2065.3567516181.

The spelling of 8810189221 in words is "eight billion, eight hundred ten million, one hundred eighty-nine thousand, two hundred twenty-one".