11090110109 has 4 divisors (see below), whose sum is σ = 11943195516. Its totient is φ = 10237024704.

The previous prime is 11090110093. The next prime is 11090110127. The reversal of 11090110109 is 90101109011.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5310765625 + 5779344484 = 72875^2 + 76022^2 .

It is a cyclic number.

It is not a de Polignac number, because 11090110109 - 2⁴ = 11090110093 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 (11090113109) 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, 426542684 + ... + 426542709.

It is an arithmetic number, because the mean of its divisors is an integer number (2985798879).

Almost surely, 2^11090110109 is an apocalyptic number.

It is an amenable number.

11090110109 is a deficient number, since it is larger than the sum of its proper divisors (853085407).

11090110109 is an equidigital number, since it uses as much as digits as its factorization.

11090110109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853085406.

The product of its (nonzero) digits is 81, while the sum is 23.

The spelling of 11090110109 in words is "eleven billion, ninety million, one hundred ten thousand, one hundred nine".