12131324244 has 144 divisors (see below), whose sum is σ = 33418344960. Its totient is φ = 3688450560.

The previous prime is 12131324243. The next prime is 12131324251. The reversal of 12131324244 is 44242313121.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131324243) 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, 27633777 + ... + 27634215.

It is an arithmetic number, because the mean of its divisors is an integer number (232071840).

Almost surely, 2^12131324244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12131324244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16709172480).

12131324244 is an abundant number, since it is smaller than the sum of its proper divisors (21287020716).

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

12131324244 is a wasteful number, since it uses less digits than its factorization.

12131324244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030 (or 1025 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 12131324244 its reverse (44242313121), we get a palindrome (56373637365).

The spelling of 12131324244 in words is "twelve billion, one hundred thirty-one million, three hundred twenty-four thousand, two hundred forty-four".