200211221209 has 2 divisors, whose sum is σ = 200211221210. Its totient is φ = 200211221208.

The previous prime is 200211221207. The next prime is 200211221227. The reversal of 200211221209 is 902122112002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198007200400 + 2204020809 = 444980^2 + 46947^2 .

It is a cyclic number.

It is not a de Polignac number, because 200211221209 - 2¹ = 200211221207 is a prime.

Together with 200211221207, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 200211221209.

It is not a weakly prime, because it can be changed into another prime (200211221201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100105610604 + 100105610605.

It is an arithmetic number, because the mean of its divisors is an integer number (100105610605).

Almost surely, 2^200211221209 is an apocalyptic number.

It is an amenable number.

200211221209 is a deficient number, since it is larger than the sum of its proper divisors (1).

200211221209 is an equidigital number, since it uses as much as digits as its factorization.

200211221209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 200211221209 in words is "two hundred billion, two hundred eleven million, two hundred twenty-one thousand, two hundred nine".