12321344535120 has 240 divisors, whose sum is σ = 42506905633920. Its totient is φ = 3196184749056.

The previous prime is 12321344535119. The next prime is 12321344535131. The reversal of 12321344535120 is 2153544312321.

12321344535120 is a `hidden beast` number, since 1 + 2 + 3 + 2 + 134 + 4 + 5 + 3 + 512 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 126731167 + ... + 126828353.

It is an arithmetic number, because the mean of its divisors is an integer number (177112106808).

Almost surely, 2^{12321344535120} is an apocalyptic number.

12321344535120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12321344535120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21253452816960).

12321344535120 is an abundant number, since it is smaller than the sum of its proper divisors (30185561098800).

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

12321344535120 is a wasteful number, since it uses less digits than its factorization.

12321344535120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102002 (or 101993 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 12321344535120 its reverse (2153544312321), we get a palindrome (14474888847441).

The spelling of 12321344535120 in words is "twelve trillion, three hundred twenty-one billion, three hundred forty-four million, five hundred thirty-five thousand, one hundred twenty".