12321220223 has 16 divisors (see below), whose sum is σ = 13469008896. Its totient is φ = 11202317280.

The previous prime is 12321220201. The next prime is 12321220231. The reversal of 12321220223 is 32202212321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12321220223 - 2⁶ = 12321220159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12321220195 and 12321220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321220283) 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 15 ways as a sum of consecutive naturals, for example, 1030586 + ... + 1042472.

It is an arithmetic number, because the mean of its divisors is an integer number (841813056).

Almost surely, 2^12321220223 is an apocalyptic number.

12321220223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12321220223 is a deficient number, since it is larger than the sum of its proper divisors (1147788673).

12321220223 is a wasteful number, since it uses less digits than its factorization.

12321220223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13094.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 12321220223 its reverse (32202212321), we get a palindrome (44523432544).

The spelling of 12321220223 in words is "twelve billion, three hundred twenty-one million, two hundred twenty thousand, two hundred twenty-three".