12261651320600 has 96 divisors (see below), whose sum is σ = 31286235052800. Its totient is φ = 4432082870400.

The previous prime is 12261651320599. The next prime is 12261651320641. The reversal of 12261651320600 is 602315616221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16319660 + ... + 17054459.

It is an arithmetic number, because the mean of its divisors is an integer number (325898281800).

Almost surely, 2^{12261651320600} is an apocalyptic number.

12261651320600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12261651320600 is an abundant number, since it is smaller than the sum of its proper divisors (19024583732200).

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

12261651320600 is a wasteful number, since it uses less digits than its factorization.

12261651320600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33374313 (or 33374304 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

Adding to 12261651320600 its reverse (602315616221), we get a palindrome (12863966936821).

The spelling of 12261651320600 in words is "twelve trillion, two hundred sixty-one billion, six hundred fifty-one million, three hundred twenty thousand, six hundred".