12102321017 has 4 divisors (see below), whose sum is σ = 12102541200. Its totient is φ = 12102100836.

The previous prime is 12102321013. The next prime is 12102321037. The reversal of 12102321017 is 71012320121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, 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 12102321017 - 2² = 12102321013 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 12102321017.

It is not an unprimeable number, because it can be changed into a prime (12102321013) 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, 48734 + ... + 163032.

It is an arithmetic number, because the mean of its divisors is an integer number (3025635300).

Almost surely, 2^12102321017 is an apocalyptic number.

It is an amenable number.

12102321017 is a deficient number, since it is larger than the sum of its proper divisors (220183).

12102321017 is a wasteful number, since it uses less digits than its factorization.

12102321017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220182.

The product of its (nonzero) digits is 168, while the sum is 20.

Adding to 12102321017 its reverse (71012320121), we get a palindrome (83114641138).

The spelling of 12102321017 in words is "twelve billion, one hundred two million, three hundred twenty-one thousand, seventeen".