11211366109 has 2 divisors, whose sum is σ = 11211366110. Its totient is φ = 11211366108.

The previous prime is 11211366053. The next prime is 11211366113. The reversal of 11211366109 is 90166311211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10047055225 + 1164310884 = 100235^2 + 34122^2 .

It is a cyclic number.

It is not a de Polignac number, because 11211366109 - 2⁷ = 11211365981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11211366209) 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, 5605683054 + 5605683055.

It is an arithmetic number, because the mean of its divisors is an integer number (5605683055).

Almost surely, 2^11211366109 is an apocalyptic number.

It is an amenable number.

11211366109 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211366109 is an equidigital number, since it uses as much as digits as its factorization.

11211366109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 31.

The spelling of 11211366109 in words is "eleven billion, two hundred eleven million, three hundred sixty-six thousand, one hundred nine".