12321130031124 has 96 divisors (see below), whose sum is σ = 30715743179520. Its totient is φ = 3830506487808.

The previous prime is 12321130031071. The next prime is 12321130031137. The reversal of 12321130031124 is 42113003112321.

It is a junction number, because it is equal to n+sod(n) for n = 12321130031094 and 12321130031103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126253132 + ... + 126350684.

It is an arithmetic number, because the mean of its divisors is an integer number (319955658120).

Almost surely, 2^{12321130031124} 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 12321130031124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15357871589760).

12321130031124 is an abundant number, since it is smaller than the sum of its proper divisors (18394613148396).

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

12321130031124 is a wasteful number, since it uses less digits than its factorization.

12321130031124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103169 (or 103167 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 12321130031124 its reverse (42113003112321), we get a palindrome (54434133143445).

The spelling of 12321130031124 in words is "twelve trillion, three hundred twenty-one billion, one hundred thirty million, thirty-one thousand, one hundred twenty-four".