12215442038 has 16 divisors (see below), whose sum is σ = 20422102320. Its totient is φ = 5445893376.

The previous prime is 12215442037. The next prime is 12215442097. The reversal of 12215442038 is 83024451221.

12215442038 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12215441995 and 12215442013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12215442037) 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 in 7 ways as a sum of consecutive naturals, for example, 9454031 + ... + 9455322.

It is an arithmetic number, because the mean of its divisors is an integer number (1276381395).

Almost surely, 2^12215442038 is an apocalyptic number.

12215442038 is a deficient number, since it is larger than the sum of its proper divisors (8206660282).

12215442038 is a wasteful number, since it uses less digits than its factorization.

12215442038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18909391.

The product of its (nonzero) digits is 15360, while the sum is 32.

Adding to 12215442038 its reverse (83024451221), we get a palindrome (95239893259).

The spelling of 12215442038 in words is "twelve billion, two hundred fifteen million, four hundred forty-two thousand, thirty-eight".