206360221 has 8 divisors (see below), whose sum is σ = 211311360. Its totient is φ = 201432528.

The previous prime is 206360213. The next prime is 206360227. The reversal of 206360221 is 122063602.

It is a happy number.

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 206360221 - 2³ = 206360213 is a prime.

It is a super-2 number, since 2×206360221² = 85169081622337682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 206360192 and 206360201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206360227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12640 + ... + 23926.

It is an arithmetic number, because the mean of its divisors is an integer number (26413920).

Almost surely, 2^206360221 is an apocalyptic number.

It is an amenable number.

206360221 is a deficient number, since it is larger than the sum of its proper divisors (4951139).

206360221 is a wasteful number, since it uses less digits than its factorization.

206360221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11723.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 206360221 is about 14365.2435064638. The cubic root of 206360221 is about 590.9381044754.

The spelling of 206360221 in words is "two hundred six million, three hundred sixty thousand, two hundred twenty-one".