205160221 has 8 divisors (see below), whose sum is σ = 235963520. Its totient is φ = 174730608.

The previous prime is 205160177. The next prime is 205160237. The reversal of 205160221 is 122061502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 205160221 - 2⁷ = 205160093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205160281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92241 + ... + 94438.

It is an arithmetic number, because the mean of its divisors is an integer number (29495440).

Almost surely, 2^205160221 is an apocalyptic number.

It is an amenable number.

205160221 is a deficient number, since it is larger than the sum of its proper divisors (30803299).

205160221 is a wasteful number, since it uses less digits than its factorization.

205160221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186843.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 205160221 is about 14323.4151304778. The cubic root of 205160221 is about 589.7904273385.

The spelling of 205160221 in words is "two hundred five million, one hundred sixty thousand, two hundred twenty-one".