12201229321 has 2 divisors, whose sum is σ = 12201229322. Its totient is φ = 12201229320.

The previous prime is 12201229283. The next prime is 12201229361. The reversal of 12201229321 is 12392210221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9488902921 + 2712326400 = 97411^2 + 52080^2 .

It is an emirp because it is prime and its reverse (12392210221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12201229321 - 2¹¹ = 12201227273 is a prime.

It is not a weakly prime, because it can be changed into another prime (12201229361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6100614660 + 6100614661.

It is an arithmetic number, because the mean of its divisors is an integer number (6100614661).

Almost surely, 2^12201229321 is an apocalyptic number.

It is an amenable number.

12201229321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12201229321 is an equidigital number, since it uses as much as digits as its factorization.

12201229321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 12201229321 its reverse (12392210221), we get a palindrome (24593439542).

The spelling of 12201229321 in words is "twelve billion, two hundred one million, two hundred twenty-nine thousand, three hundred twenty-one".