12321105221 has 8 divisors (see below), whose sum is σ = 12859098624. Its totient is φ = 11783302960.

The previous prime is 12321105193. The next prime is 12321105253. The reversal of 12321105221 is 12250112321.

12321105221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12321105221 - 2¹⁸ = 12320843077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12321105193 and 12321105202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321165221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92780 + ... + 182346.

It is an arithmetic number, because the mean of its divisors is an integer number (1607387328).

Almost surely, 2^12321105221 is an apocalyptic number.

It is an amenable number.

12321105221 is a deficient number, since it is larger than the sum of its proper divisors (537993403).

12321105221 is an equidigital number, since it uses as much as digits as its factorization.

12321105221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95571.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 12321105221 its reverse (12250112321), we get a palindrome (24571217542).

The spelling of 12321105221 in words is "twelve billion, three hundred twenty-one million, one hundred five thousand, two hundred twenty-one".