12112221212237 has 2 divisors, whose sum is σ = 12112221212238. Its totient is φ = 12112221212236.

The previous prime is 12112221212197. The next prime is 12112221212239. The reversal of 12112221212237 is 73221212221121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8866941463081 + 3245279749156 = 2977741^2 + 1801466^2 .

It is an emirp because it is prime and its reverse (73221212221121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12112221212237 - 2²⁴ = 12112204435021 is a prime.

Together with 12112221212239, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12112221212239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6056110606118 + 6056110606119.

It is an arithmetic number, because the mean of its divisors is an integer number (6056110606119).

Almost surely, 2^{12112221212237} is an apocalyptic number.

It is an amenable number.

12112221212237 is a deficient number, since it is larger than the sum of its proper divisors (1).

12112221212237 is an equidigital number, since it uses as much as digits as its factorization.

12112221212237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 29.

Adding to 12112221212237 its reverse (73221212221121), we get a palindrome (85333433433358).

The spelling of 12112221212237 in words is "twelve trillion, one hundred twelve billion, two hundred twenty-one million, two hundred twelve thousand, two hundred thirty-seven".