12011220110209 has 2 divisors, whose sum is σ = 12011220110210. Its totient is φ = 12011220110208.

The previous prime is 12011220110189. The next prime is 12011220110213. The reversal of 12011220110209 is 90201102211021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10974458323984 + 1036761786225 = 3312772^2 + 1018215^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011220110209 - 2³³ = 12002630175617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12011220110209.

It is not a weakly prime, because it can be changed into another prime (12011220110269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005610055104 + 6005610055105.

It is an arithmetic number, because the mean of its divisors is an integer number (6005610055105).

Almost surely, 2^{12011220110209} is an apocalyptic number.

It is an amenable number.

12011220110209 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011220110209 is an equidigital number, since it uses as much as digits as its factorization.

12011220110209 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 12011220110209 in words is "twelve trillion, eleven billion, two hundred twenty million, one hundred ten thousand, two hundred nine".