200211221 has 4 divisors (see below), whose sum is σ = 228812832. Its totient is φ = 171609612.

The previous prime is 200211203. The next prime is 200211223. The reversal of 200211221 is 122112002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 200211221 - 2²² = 196016917 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 (200211223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14300795 + ... + 14300808.

It is an arithmetic number, because the mean of its divisors is an integer number (57203208).

Almost surely, 2^200211221 is an apocalyptic number.

It is an amenable number.

200211221 is a deficient number, since it is larger than the sum of its proper divisors (28601611).

200211221 is an equidigital number, since it uses as much as digits as its factorization.

200211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28601610.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 200211221 is about 14149.6014431503. The cubic root of 200211221 is about 585.0093465281.

Adding to 200211221 its reverse (122112002), we get a palindrome (322323223).

The spelling of 200211221 in words is "two hundred million, two hundred eleven thousand, two hundred twenty-one".