12031330122 has 96 divisors (see below), whose sum is σ = 30282670080. Its totient is φ = 3381225120.

The previous prime is 12031330111. The next prime is 12031330123. The reversal of 12031330122 is 22103313021.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12031330095 and 12031330104.

It is not an unprimeable number, because it can be changed into a prime (12031330123) 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, 2814847 + ... + 2819117.

It is an arithmetic number, because the mean of its divisors is an integer number (315444480).

Almost surely, 2^12031330122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12031330122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15141335040).

12031330122 is an abundant number, since it is smaller than the sum of its proper divisors (18251339958).

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

12031330122 is a wasteful number, since it uses less digits than its factorization.

12031330122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4648 (or 4645 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12031330122 its reverse (22103313021), we get a palindrome (34134643143).

The spelling of 12031330122 in words is "twelve billion, thirty-one million, three hundred thirty thousand, one hundred twenty-two".