211012022209 has 2 divisors, whose sum is σ = 211012022210. Its totient is φ = 211012022208.

The previous prime is 211012022203. The next prime is 211012022321. The reversal of 211012022209 is 902220210112.

211012022209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193009091584 + 18002930625 = 439328^2 + 134175^2 .

It is a cyclic number.

It is not a de Polignac number, because 211012022209 - 2⁹ = 211012021697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211012022209.

It is not a weakly prime, because it can be changed into another prime (211012022203) 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 as a sum of consecutive naturals, namely, 105506011104 + 105506011105.

It is an arithmetic number, because the mean of its divisors is an integer number (105506011105).

Almost surely, 2^211012022209 is an apocalyptic number.

It is an amenable number.

211012022209 is a deficient number, since it is larger than the sum of its proper divisors (1).

211012022209 is an equidigital number, since it uses as much as digits as its factorization.

211012022209 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 211012022209 in words is "two hundred eleven billion, twelve million, twenty-two thousand, two hundred nine".