12101319665 has 8 divisors (see below), whose sum is σ = 15022328040. Its totient is φ = 9347226112.

The previous prime is 12101319653. The next prime is 12101319683. The reversal of 12101319665 is 56691310121.

It can be written as a sum of positive squares in 4 ways, for example, as 161823841 + 11939495824 = 12721^2 + 109268^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12101319665 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41728544 + ... + 41728833.

It is an arithmetic number, because the mean of its divisors is an integer number (1877791005).

Almost surely, 2^12101319665 is an apocalyptic number.

It is an amenable number.

12101319665 is a deficient number, since it is larger than the sum of its proper divisors (2921008375).

12101319665 is an equidigital number, since it uses as much as digits as its factorization.

12101319665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83457411.

The product of its (nonzero) digits is 9720, while the sum is 35.

Adding to 12101319665 its reverse (56691310121), we get a palindrome (68792629786).

The spelling of 12101319665 in words is "twelve billion, one hundred one million, three hundred nineteen thousand, six hundred sixty-five".