12322231223221 has 4 divisors (see below), whose sum is σ = 12323017747552. Its totient is φ = 12321444698892.

The previous prime is 12322231223083. The next prime is 12322231223233. The reversal of 12322231223221 is 12232213222321.

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 12322231223221 - 2¹³ = 12322231215029 is a prime.

It is a super-2 number, since 2×12322231223221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12322231223221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12322231223251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393238665 + ... + 393269998.

It is an arithmetic number, because the mean of its divisors is an integer number (3080754436888).

Almost surely, 2^{12322231223221} is an apocalyptic number.

It is an amenable number.

12322231223221 is a deficient number, since it is larger than the sum of its proper divisors (786524331).

12322231223221 is an equidigital number, since it uses as much as digits as its factorization.

12322231223221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786524330.

The product of its digits is 6912, while the sum is 28.

Adding to 12322231223221 its reverse (12232213222321), we get a palindrome (24554444445542).

Subtracting from 12322231223221 its reverse (12232213222321), we obtain a square (90018000900 = 300030²).

The spelling of 12322231223221 in words is "twelve trillion, three hundred twenty-two billion, two hundred thirty-one million, two hundred twenty-three thousand, two hundred twenty-one".