12215442037 has 2 divisors, whose sum is σ = 12215442038. Its totient is φ = 12215442036.

The previous prime is 12215441999. The next prime is 12215442097. The reversal of 12215442037 is 73024451221.

It is a happy number.

12215442037 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11534545201 + 680896836 = 107399^2 + 26094^2 .

It is a cyclic number.

It is not a de Polignac number, because 12215442037 - 2¹¹ = 12215439989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12215442097) 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, 6107721018 + 6107721019.

It is an arithmetic number, because the mean of its divisors is an integer number (6107721019).

Almost surely, 2^12215442037 is an apocalyptic number.

It is an amenable number.

12215442037 is a deficient number, since it is larger than the sum of its proper divisors (1).

12215442037 is an equidigital number, since it uses as much as digits as its factorization.

12215442037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 31.

Adding to 12215442037 its reverse (73024451221), we get a palindrome (85239893258).

The spelling of 12215442037 in words is "twelve billion, two hundred fifteen million, four hundred forty-two thousand, thirty-seven".