12201223321 has 4 divisors (see below), whose sum is σ = 13944255232. Its totient is φ = 10458191412.

The previous prime is 12201223283. The next prime is 12201223327. The reversal of 12201223321 is 12332210221.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12332210221 = 137 ⋅90016133.

It is a cyclic number.

It is not a de Polignac number, because 12201223321 - 2¹⁷ = 12201092249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12201223327) 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, 871515945 + ... + 871515958.

It is an arithmetic number, because the mean of its divisors is an integer number (3486063808).

Almost surely, 2^12201223321 is an apocalyptic number.

It is an amenable number.

12201223321 is a deficient number, since it is larger than the sum of its proper divisors (1743031911).

12201223321 is an equidigital number, since it uses as much as digits as its factorization.

12201223321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1743031910.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12201223321 its reverse (12332210221), we get a palindrome (24533433542).

The spelling of 12201223321 in words is "twelve billion, two hundred one million, two hundred twenty-three thousand, three hundred twenty-one".