899285322221 has 12 divisors (see below), whose sum is σ = 1064506848636. Its totient is φ = 754645024320.

The previous prime is 899285322197. The next prime is 899285322239. The reversal of 899285322221 is 122223582998.

It can be written as a sum of positive squares in 2 ways, for example, as 415523341321 + 483761980900 = 644611^2 + 695530^2 .

It is not a de Polignac number, because 899285322221 - 2⁶ = 899285322157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899285322281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 285848816 + ... + 285851961.

It is an arithmetic number, because the mean of its divisors is an integer number (88708904053).

Almost surely, 2^899285322221 is an apocalyptic number.

It is an amenable number.

899285322221 is a deficient number, since it is larger than the sum of its proper divisors (165221526415).

899285322221 is a wasteful number, since it uses less digits than its factorization.

899285322221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571700812 (or 571700801 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 53.

The spelling of 899285322221 in words is "eight hundred ninety-nine billion, two hundred eighty-five million, three hundred twenty-two thousand, two hundred twenty-one".