12321403265552 has 20 divisors (see below), whose sum is σ = 24032938421100. Its totient is φ = 6119354640768.

The previous prime is 12321403265503. The next prime is 12321403265617. The reversal of 12321403265552 is 25556230412321.

It can be written as a sum of positive squares in 2 ways, for example, as 6648641622016 + 5672761643536 = 2578496^2 + 2381756^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2584184543 + ... + 2584189310.

It is an arithmetic number, because the mean of its divisors is an integer number (1201646921055).

Almost surely, 2^{12321403265552} is an apocalyptic number.

It is an amenable number.

12321403265552 is a deficient number, since it is larger than the sum of its proper divisors (11711535155548).

12321403265552 is a wasteful number, since it uses less digits than its factorization.

12321403265552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5168374010 (or 5168374004 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 41.

Adding to 12321403265552 its reverse (25556230412321), we get a palindrome (37877633677873).

The spelling of 12321403265552 in words is "twelve trillion, three hundred twenty-one billion, four hundred three million, two hundred sixty-five thousand, five hundred fifty-two".