12243322121142 has 96 divisors (see below), whose sum is σ = 28830624689664. Its totient is φ = 3455589748800.

The previous prime is 12243322121141. The next prime is 12243322121167. The reversal of 12243322121142 is 24112122334221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12243322121141) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 315034792 + ... + 315073652.

It is an arithmetic number, because the mean of its divisors is an integer number (300319007184).

Almost surely, 2^{12243322121142} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12243322121142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14415312344832).

12243322121142 is an abundant number, since it is smaller than the sum of its proper divisors (16587302568522).

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

12243322121142 is a wasteful number, since it uses less digits than its factorization.

12243322121142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51874 (or 51867 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

Adding to 12243322121142 its reverse (24112122334221), we get a palindrome (36355444455363).

The spelling of 12243322121142 in words is "twelve trillion, two hundred forty-three billion, three hundred twenty-two million, one hundred twenty-one thousand, one hundred forty-two".