12212332321 has 4 divisors (see below), whose sum is σ = 13956951232. Its totient is φ = 10467713412.

The previous prime is 12212332291. The next prime is 12212332331. The reversal of 12212332321 is 12323321221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12212332321 - 2⁷ = 12212332193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12212332292 and 12212332301.

It is not an unprimeable number, because it can be changed into a prime (12212332331) 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 3 ways as a sum of consecutive naturals, for example, 872309445 + ... + 872309458.

It is an arithmetic number, because the mean of its divisors is an integer number (3489237808).

Almost surely, 2^12212332321 is an apocalyptic number.

It is an amenable number.

12212332321 is a deficient number, since it is larger than the sum of its proper divisors (1744618911).

12212332321 is an equidigital number, since it uses as much as digits as its factorization.

12212332321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744618910.

The product of its digits is 864, while the sum is 22.

Adding to 12212332321 its reverse (12323321221), we get a palindrome (24535653542).

The spelling of 12212332321 in words is "twelve billion, two hundred twelve million, three hundred thirty-two thousand, three hundred twenty-one".