11101091 has 4 divisors (see below), whose sum is σ = 11107800. Its totient is φ = 11094384.

The previous prime is 11101087. The next prime is 11101093. The reversal of 11101091 is 19010111.

It is a happy number.

11101091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11101091 - 2² = 11101087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11101093) 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, 1100 + ... + 4838.

It is an arithmetic number, because the mean of its divisors is an integer number (2776950).

Almost surely, 2^11101091 is an apocalyptic number.

11101091 is a deficient number, since it is larger than the sum of its proper divisors (6709).

11101091 is an equidigital number, since it uses as much as digits as its factorization.

11101091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6708.

The product of its (nonzero) digits is 9, while the sum is 14.

The square root of 11101091 is about 3331.8299776549. The cubic root of 11101091 is about 223.0772185947.

The spelling of 11101091 in words is "eleven million, one hundred one thousand, ninety-one".