12621057200 has 30 divisors (see below), whose sum is σ = 30322090884. Its totient is φ = 5048422720.

The previous prime is 12621057167. The next prime is 12621057271. The reversal of 12621057200 is 275012621.

It is a self number, because there is not a number n which added to its sum of digits gives 12621057200.

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 5 ways as a sum of consecutive naturals, for example, 15775922 + ... + 15776721.

Almost surely, 2^12621057200 is an apocalyptic number.

12621057200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12621057200 is an abundant number, since it is smaller than the sum of its proper divisors (17701033684).

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

12621057200 is a wasteful number, since it uses less digits than its factorization.

12621057200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31552661 (or 31552650 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

Adding to 12621057200 its reverse (275012621), we get a palindrome (12896069821).

The spelling of 12621057200 in words is "twelve billion, six hundred twenty-one million, fifty-seven thousand, two hundred".