11011200111209 has 2 divisors, whose sum is σ = 11011200111210. Its totient is φ = 11011200111208.

The previous prime is 11011200111187. The next prime is 11011200111227. The reversal of 11011200111209 is 90211100211011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9132030705625 + 1879169405584 = 3021925^2 + 1370828^2 .

It is a cyclic number.

It is not a de Polignac number, because 11011200111209 - 2¹⁶ = 11011200045673 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11011200116209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505600055604 + 5505600055605.

It is an arithmetic number, because the mean of its divisors is an integer number (5505600055605).

Almost surely, 2^{11011200111209} is an apocalyptic number.

It is an amenable number.

11011200111209 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011200111209 is an equidigital number, since it uses as much as digits as its factorization.

11011200111209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 20.

The spelling of 11011200111209 in words is "eleven trillion, eleven billion, two hundred million, one hundred eleven thousand, two hundred nine".