11089218911 has 4 divisors (see below), whose sum is σ = 11471605800. Its totient is φ = 10706832024.

The previous prime is 11089218893. The next prime is 11089218913. The reversal of 11089218911 is 11981298011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11981298011 = 15739 ⋅761249.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11089218911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11089218913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191193401 + ... + 191193458.

It is an arithmetic number, because the mean of its divisors is an integer number (2867901450).

Almost surely, 2^11089218911 is an apocalyptic number.

11089218911 is a deficient number, since it is larger than the sum of its proper divisors (382386889).

11089218911 is an equidigital number, since it uses as much as digits as its factorization.

11089218911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382386888.

The product of its (nonzero) digits is 10368, while the sum is 41.

The spelling of 11089218911 in words is "eleven billion, eighty-nine million, two hundred eighteen thousand, nine hundred eleven".