221088250 has 16 divisors (see below), whose sum is σ = 413877672. Its totient is φ = 88435200.

The previous prime is 221088233. The next prime is 221088299. The reversal of 221088250 is 52880122.

It can be written as a sum of positive squares in 4 ways, for example, as 27071209 + 194017041 = 5203^2 + 13929^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441927 + ... + 442426.

Almost surely, 2^221088250 is an apocalyptic number.

221088250 is a deficient number, since it is larger than the sum of its proper divisors (192789422).

221088250 is an equidigital number, since it uses as much as digits as its factorization.

221088250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884370 (or 884360 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 221088250 is about 14869.0366197679. The cubic root of 221088250 is about 604.6748246870.

The spelling of 221088250 in words is "two hundred twenty-one million, eighty-eight thousand, two hundred fifty".