12521115200 has 84 divisors (see below), whose sum is σ = 33610704432. Its totient is φ = 4553126400.

The previous prime is 12521115193. The next prime is 12521115241. The reversal of 12521115200 is 251112521.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 338114 + ... + 373313.

Almost surely, 2^12521115200 is an apocalyptic number.

12521115200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12521115200 is an abundant number, since it is smaller than the sum of its proper divisors (21089589232).

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

12521115200 is a wasteful number, since it uses less digits than its factorization.

12521115200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711460 (or 711445 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 20.

Adding to 12521115200 its reverse (251112521), we get a palindrome (12772227721).

It can be divided in two parts, 12521 and 115200, that added together give a palindrome (127721).

The spelling of 12521115200 in words is "twelve billion, five hundred twenty-one million, one hundred fifteen thousand, two hundred".