11900111110009 has 2 divisors, whose sum is σ = 11900111110010. Its totient is φ = 11900111110008.

The previous prime is 11900111110003. The next prime is 11900111110021. The reversal of 11900111110009 is 90001111100911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11795597918784 + 104513191225 = 3434472^2 + 323285^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11900111110009 is a prime.

It is a super-2 number, since 2×11900111110009² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11900111110003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5950055555004 + 5950055555005.

It is an arithmetic number, because the mean of its divisors is an integer number (5950055555005).

Almost surely, 2^{11900111110009} is an apocalyptic number.

It is an amenable number.

11900111110009 is a deficient number, since it is larger than the sum of its proper divisors (1).

11900111110009 is an equidigital number, since it uses as much as digits as its factorization.

11900111110009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81, while the sum is 25.

The spelling of 11900111110009 in words is "eleven trillion, nine hundred billion, one hundred eleven million, one hundred ten thousand, nine".