12212244221237 has 2 divisors, whose sum is σ = 12212244221238. Its totient is φ = 12212244221236.

The previous prime is 12212244221189. The next prime is 12212244221239. The reversal of 12212244221237 is 73212244221221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10987428343441 + 1224815877796 = 3314729^2 + 1106714^2 .

It is a cyclic number.

It is not a de Polignac number, because 12212244221237 - 2²² = 12212240026933 is a prime.

Together with 12212244221239, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12212244221197 and 12212244221206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12212244221239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106122110618 + 6106122110619.

It is an arithmetic number, because the mean of its divisors is an integer number (6106122110619).

Almost surely, 2^{12212244221237} is an apocalyptic number.

It is an amenable number.

12212244221237 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212244221237 is an equidigital number, since it uses as much as digits as its factorization.

12212244221237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43008, while the sum is 35.

Adding to 12212244221237 its reverse (73212244221221), we get a palindrome (85424488442458).

The spelling of 12212244221237 in words is "twelve trillion, two hundred twelve billion, two hundred forty-four million, two hundred twenty-one thousand, two hundred thirty-seven".