12222442321 has 2 divisors, whose sum is σ = 12222442322. Its totient is φ = 12222442320.

The previous prime is 12222442313. The next prime is 12222442339. The reversal of 12222442321 is 12324422221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12124432321 + 98010000 = 110111^2 + 9900^2 .

It is a cyclic number.

It is not a de Polignac number, because 12222442321 - 2³ = 12222442313 is a prime.

It is not a weakly prime, because it can be changed into another prime (12222442361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6111221160 + 6111221161.

It is an arithmetic number, because the mean of its divisors is an integer number (6111221161).

Almost surely, 2^12222442321 is an apocalyptic number.

It is an amenable number.

12222442321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12222442321 is an equidigital number, since it uses as much as digits as its factorization.

12222442321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3072, while the sum is 25.

Adding to 12222442321 its reverse (12324422221), we get a palindrome (24546864542).

The spelling of 12222442321 in words is "twelve billion, two hundred twenty-two million, four hundred forty-two thousand, three hundred twenty-one".