221030608 has 20 divisors (see below), whose sum is σ = 430879168. Its totient is φ = 109836000.

The previous prime is 221030587. The next prime is 221030609. The reversal of 221030608 is 806030122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221030609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39768 + ... + 44983.

Almost surely, 2^221030608 is an apocalyptic number.

It is an amenable number.

221030608 is a deficient number, since it is larger than the sum of its proper divisors (209848560).

221030608 is a wasteful number, since it uses less digits than its factorization.

221030608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84922 (or 84916 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 221030608 is about 14867.0981701205. The cubic root of 221030608 is about 604.6222699631.

The spelling of 221030608 in words is "two hundred twenty-one million, thirty thousand, six hundred eight".