11010212111209 has 2 divisors, whose sum is σ = 11010212111210. Its totient is φ = 11010212111208.

The previous prime is 11010212111203. The next prime is 11010212111233. The reversal of 11010212111209 is 90211121201011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10534211466025 + 476000645184 = 3245645^2 + 689928^2 .

It is a cyclic number.

It is not a de Polignac number, because 11010212111209 - 2⁹ = 11010212110697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11010212111209.

It is not a weakly prime, because it can be changed into another prime (11010212111203) 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, 5505106055604 + 5505106055605.

It is an arithmetic number, because the mean of its divisors is an integer number (5505106055605).

Almost surely, 2^{11010212111209} is an apocalyptic number.

It is an amenable number.

11010212111209 is a deficient number, since it is larger than the sum of its proper divisors (1).

11010212111209 is an equidigital number, since it uses as much as digits as its factorization.

11010212111209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 11010212111209 in words is "eleven trillion, ten billion, two hundred twelve million, one hundred eleven thousand, two hundred nine".