12201221545200 has 180 divisors, whose sum is σ = 42430029869760. Its totient is φ = 3246866012160.

The previous prime is 12201221545199. The next prime is 12201221545243. The reversal of 12201221545200 is 254512210221.

12201221545200 is a `hidden beast` number, since 1 + 2 + 2 + 0 + 122 + 15 + 4 + 520 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (180).

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 35 ways as a sum of consecutive naturals, for example, 1813417 + ... + 5262216.

Almost surely, 2^{12201221545200} is an apocalyptic number.

12201221545200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12201221545200 is an abundant number, since it is smaller than the sum of its proper divisors (30228808324560).

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

12201221545200 is a wasteful number, since it uses less digits than its factorization.

12201221545200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7076136 (or 7076122 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 12201221545200 its reverse (254512210221), we get a palindrome (12455733755421).

The spelling of 12201221545200 in words is "twelve trillion, two hundred one billion, two hundred twenty-one million, five hundred forty-five thousand, two hundred".