12123203142320 has 320 divisors, whose sum is σ = 30956207425920. Its totient is φ = 4399349760000.

The previous prime is 12123203142269. The next prime is 12123203142359. The reversal of 12123203142320 is 2324130232121.

It is a self number, because there is not a number n which added to its sum of digits gives 12123203142320.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1980588860 + ... + 1980594980.

It is an arithmetic number, because the mean of its divisors is an integer number (96738148206).

Almost surely, 2^{12123203142320} is an apocalyptic number.

12123203142320 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 12123203142320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15478103712960).

12123203142320 is an abundant number, since it is smaller than the sum of its proper divisors (18833004283600).

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

12123203142320 is a wasteful number, since it uses less digits than its factorization.

12123203142320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6776 (or 6770 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 12123203142320 its reverse (2324130232121), we get a palindrome (14447333374441).

The spelling of 12123203142320 in words is "twelve trillion, one hundred twenty-three billion, two hundred three million, one hundred forty-two thousand, three hundred twenty".