12221341289 has 2 divisors, whose sum is σ = 12221341290. Its totient is φ = 12221341288.

The previous prime is 12221341219. The next prime is 12221341313. The reversal of 12221341289 is 98214312221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9214464064 + 3006877225 = 95992^2 + 54835^2 .

It is an emirp because it is prime and its reverse (98214312221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12221341289 is a prime.

It is a super-2 number, since 2×12221341289² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12221341219) 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 as a sum of consecutive naturals, namely, 6110670644 + 6110670645.

It is an arithmetic number, because the mean of its divisors is an integer number (6110670645).

Almost surely, 2^12221341289 is an apocalyptic number.

It is an amenable number.

12221341289 is a deficient number, since it is larger than the sum of its proper divisors (1).

12221341289 is an equidigital number, since it uses as much as digits as its factorization.

12221341289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 35.

The spelling of 12221341289 in words is "twelve billion, two hundred twenty-one million, three hundred forty-one thousand, two hundred eighty-nine".