200202221 has 16 divisors (see below), whose sum is σ = 217002240. Its totient is φ = 184078080.

The previous prime is 200202203. The next prime is 200202239. The reversal of 200202221 is 122202002.

200202221 = 409² + 410² + ... + 874².

It is an interprime number because it is at equal distance from previous prime (200202203) and next prime (200202239).

It is a de Polignac number, because none of the positive numbers 2^k-200202221 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 (200202721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180956 + ... + 182058.

It is an arithmetic number, because the mean of its divisors is an integer number (13562640).

Almost surely, 2^200202221 is an apocalyptic number.

It is an amenable number.

200202221 is a deficient number, since it is larger than the sum of its proper divisors (16800019).

200202221 is a wasteful number, since it uses less digits than its factorization.

200202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 200202221 is about 14149.2834094169. The cubic root of 200202221 is about 585.0005805142. Note that the first 3 decimals are identical.

Adding to 200202221 its reverse (122202002), we get a palindrome (322404223).

The spelling of 200202221 in words is "two hundred million, two hundred two thousand, two hundred twenty-one".