11665101 has 16 divisors (see below), whose sum is σ = 18257024. Its totient is φ = 6485184.

The previous prime is 11665097. The next prime is 11665133. The reversal of 11665101 is 10156611.

It is not a de Polignac number, because 11665101 - 2² = 11665097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11665151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6730 + ... + 8283.

It is an arithmetic number, because the mean of its divisors is an integer number (1141064).

Almost surely, 2^11665101 is an apocalyptic number.

It is an amenable number.

11665101 is a deficient number, since it is larger than the sum of its proper divisors (6591923).

11665101 is a wasteful number, since it uses less digits than its factorization.

11665101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15060.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 11665101 is about 3415.4210574979. The cubic root of 11665101 is about 226.7929244205.

The spelling of 11665101 in words is "eleven million, six hundred sixty-five thousand, one hundred one".