12321323211 has 16 divisors (see below), whose sum is σ = 16910106624. Its totient is φ = 7976130624.

The previous prime is 12321323159. The next prime is 12321323297. The reversal of 12321323211 is 11232312321.

It is not a de Polignac number, because 12321323211 - 2¹⁰ = 12321322187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12321323011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326130 + ... + 361943.

It is an arithmetic number, because the mean of its divisors is an integer number (1056881664).

Almost surely, 2^12321323211 is an apocalyptic number.

12321323211 is a deficient number, since it is larger than the sum of its proper divisors (4588783413).

12321323211 is a wasteful number, since it uses less digits than its factorization.

12321323211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688250.

The product of its digits is 432, while the sum is 21.

Adding to 12321323211 its reverse (11232312321), we get a palindrome (23553635532).

The spelling of 12321323211 in words is "twelve billion, three hundred twenty-one million, three hundred twenty-three thousand, two hundred eleven".