11011109090911 has 2 divisors, whose sum is σ = 11011109090912. Its totient is φ = 11011109090910.

The previous prime is 11011109090899. The next prime is 11011109090921. The reversal of 11011109090911 is 11909090111011.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11011109090911 - 2⁷ = 11011109090783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11011109090921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505554545455 + 5505554545456.

It is an arithmetic number, because the mean of its divisors is an integer number (5505554545456).

Almost surely, 2^{11011109090911} is an apocalyptic number.

11011109090911 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011109090911 is an equidigital number, since it uses as much as digits as its factorization.

11011109090911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 729, while the sum is 34.

It can be divided in two parts, 11011 and 109090911, that multiplied together give a palindrome (1201200021021).

The spelling of 11011109090911 in words is "eleven trillion, eleven billion, one hundred nine million, ninety thousand, nine hundred eleven".