11089111 has 4 divisors (see below), whose sum is σ = 12097224. Its totient is φ = 10081000.

The previous prime is 11089097. The next prime is 11089123. The reversal of 11089111 is 11198011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11089111 - 2¹⁹ = 10564823 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 (11089181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 504040 + ... + 504061.

It is an arithmetic number, because the mean of its divisors is an integer number (3024306).

Almost surely, 2^11089111 is an apocalyptic number.

11089111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11089111 is a deficient number, since it is larger than the sum of its proper divisors (1008113).

11089111 is a wasteful number, since it uses less digits than its factorization.

11089111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008112.

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

The square root of 11089111 is about 3330.0316815310. The cubic root of 11089111 is about 222.9969433915.

Subtracting 11089111 from its reverse (11198011), we obtain a square (108900 = 330²).

The spelling of 11089111 in words is "eleven million, eighty-nine thousand, one hundred eleven".