12321260065 has 16 divisors (see below), whose sum is σ = 15143417856. Its totient is φ = 9620353600.

The previous prime is 12321260053. The next prime is 12321260069. The reversal of 12321260065 is 56006212321.

It is not a de Polignac number, because 12321260065 - 2⁹ = 12321259553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12321260069) 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, 71101 + ... + 172330.

It is an arithmetic number, because the mean of its divisors is an integer number (946463616).

Almost surely, 2^12321260065 is an apocalyptic number.

It is an amenable number.

12321260065 is a deficient number, since it is larger than the sum of its proper divisors (2822157791).

12321260065 is a wasteful number, since it uses less digits than its factorization.

12321260065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243680.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 12321260065 its reverse (56006212321), we get a palindrome (68327472386).

The spelling of 12321260065 in words is "twelve billion, three hundred twenty-one million, two hundred sixty thousand, sixty-five".