11101200665 has 4 divisors (see below), whose sum is σ = 13321440804. Its totient is φ = 8880960528.

The previous prime is 11101200589. The next prime is 11101200697. The reversal of 11101200665 is 56600210111.

11101200665 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.

It can be written as a sum of positive squares in 2 ways, for example, as 2111126809 + 8990073856 = 45947^2 + 94816^2 .

It is a cyclic number.

It is not a de Polignac number, because 11101200665 - 2²⁶ = 11034091801 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11101200665.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1110120062 + ... + 1110120071.

It is an arithmetic number, because the mean of its divisors is an integer number (3330360201).

Almost surely, 2^11101200665 is an apocalyptic number.

It is an amenable number.

11101200665 is a deficient number, since it is larger than the sum of its proper divisors (2220240139).

11101200665 is an equidigital number, since it uses as much as digits as its factorization.

11101200665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2220240138.

The product of its (nonzero) digits is 360, while the sum is 23.

Adding to 11101200665 its reverse (56600210111), we get a palindrome (67701410776).

The spelling of 11101200665 in words is "eleven billion, one hundred one million, two hundred thousand, six hundred sixty-five".