12156442333422 has 16 divisors (see below), whose sum is σ = 24528042939600. Its totient is φ = 4016287732352.

The previous prime is 12156442333421. The next prime is 12156442333457. The reversal of 12156442333422 is 22433324465121.

12156442333422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12156442333421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8964927297 + ... + 8964928652.

It is an arithmetic number, because the mean of its divisors is an integer number (1533002683725).

Almost surely, 2^{12156442333422} is an apocalyptic number.

12156442333422 is an abundant number, since it is smaller than the sum of its proper divisors (12371600606178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12156442333422 is a wasteful number, since it uses less digits than its factorization.

12156442333422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17929856067.

The product of its digits is 829440, while the sum is 42.

Adding to 12156442333422 its reverse (22433324465121), we get a palindrome (34589766798543).

The spelling of 12156442333422 in words is "twelve trillion, one hundred fifty-six billion, four hundred forty-two million, three hundred thirty-three thousand, four hundred twenty-two".