900221022 has 12 divisors (see below), whose sum is σ = 1950478920. Its totient is φ = 300073668.

The previous prime is 900221017. The next prime is 900221087. The reversal of 900221022 is 220122009.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 50012279 = 900221022 / (9 + 0 + 0 + 2 + 2 + 1 + 0 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 900220986 and 900221004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25006122 + ... + 25006157.

It is an arithmetic number, because the mean of its divisors is an integer number (162539910).

Almost surely, 2^900221022 is an apocalyptic number.

900221022 is an abundant number, since it is smaller than the sum of its proper divisors (1050257898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

900221022 is a wasteful number, since it uses less digits than its factorization.

900221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50012287 (or 50012284 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 900221022 is about 30003.6834738670. The cubic root of 900221022 is about 965.5684130977.

The spelling of 900221022 in words is "nine hundred million, two hundred twenty-one thousand, twenty-two".