12321636217 has 8 divisors (see below), whose sum is σ = 13446129312. Its totient is φ = 11197867200.

The previous prime is 12321636209. The next prime is 12321636293. The reversal of 12321636217 is 71263612321.

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

It is a cyclic number.

It is not a de Polignac number, because 12321636217 - 2³ = 12321636209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12321616217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145123 + ... + 213784.

It is an arithmetic number, because the mean of its divisors is an integer number (1680766164).

Almost surely, 2^12321636217 is an apocalyptic number.

It is an amenable number.

12321636217 is a deficient number, since it is larger than the sum of its proper divisors (1124493095).

12321636217 is a wasteful number, since it uses less digits than its factorization.

12321636217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362039.

The product of its digits is 18144, while the sum is 34.

The spelling of 12321636217 in words is "twelve billion, three hundred twenty-one million, six hundred thirty-six thousand, two hundred seventeen".