221488075 has 12 divisors (see below), whose sum is σ = 275002240. Its totient is φ = 176960160.

The previous prime is 221488067. The next prime is 221488093. The reversal of 221488075 is 570884122.

It is not a de Polignac number, because 221488075 - 2³ = 221488067 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15382 + ... + 26068.

Almost surely, 2^221488075 is an apocalyptic number.

221488075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

221488075 is a deficient number, since it is larger than the sum of its proper divisors (53514165).

221488075 is a wasteful number, since it uses less digits than its factorization.

221488075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11526 (or 11521 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 221488075 is about 14882.4754325347. The cubic root of 221488075 is about 605.0391113754.

The spelling of 221488075 in words is "two hundred twenty-one million, four hundred eighty-eight thousand, seventy-five".