12321013320500 has 48 divisors (see below), whose sum is σ = 27534886002624. Its totient is φ = 4813791242400.

The previous prime is 12321013320493. The next prime is 12321013320503. The reversal of 12321013320500 is 502331012321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321013320503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286513694 + ... + 286556693.

It is an arithmetic number, because the mean of its divisors is an integer number (573643458388).

Almost surely, 2^{12321013320500} is an apocalyptic number.

12321013320500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12321013320500 is an abundant number, since it is smaller than the sum of its proper divisors (15213872682124).

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

12321013320500 is a wasteful number, since it uses less digits than its factorization.

12321013320500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573070449 (or 573070437 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 12321013320500 its reverse (502331012321), we get a palindrome (12823344332821).

The spelling of 12321013320500 in words is "twelve trillion, three hundred twenty-one billion, thirteen million, three hundred twenty thousand, five hundred".