2011211120209 has 2 divisors, whose sum is σ = 2011211120210. Its totient is φ = 2011211120208.

The previous prime is 2011211120183. The next prime is 2011211120221. The reversal of 2011211120209 is 9020211121102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1899807372225 + 111403747984 = 1378335^2 + 333772^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2011211120209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2011211120209.

It is not a weakly prime, because it can be changed into another prime (2011211120509) 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, 1005605560104 + 1005605560105.

It is an arithmetic number, because the mean of its divisors is an integer number (1005605560105).

Almost surely, 2^{2011211120209} is an apocalyptic number.

It is an amenable number.

2011211120209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011211120209 is an equidigital number, since it uses as much as digits as its factorization.

2011211120209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 2011211120209 in words is "two trillion, eleven billion, two hundred eleven million, one hundred twenty thousand, two hundred nine".