201221201202200 has 48 divisors (see below), whose sum is σ = 467919117956160. Its totient is φ = 80474747120000.

The previous prime is 201221201202187. The next prime is 201221201202239. The reversal of 201221201202200 is 2202102122102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84658376 + ... + 87002775.

It is an arithmetic number, because the mean of its divisors is an integer number (9748314957420).

Almost surely, 2^{201221201202200} is an apocalyptic number.

201221201202200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201221201202200 is an abundant number, since it is smaller than the sum of its proper divisors (266697916753960).

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

201221201202200 is a wasteful number, since it uses less digits than its factorization.

201221201202200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171667028 (or 171667019 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 201221201202200 its reverse (2202102122102), we get a palindrome (203423303324302).

The spelling of 201221201202200 in words is "two hundred one trillion, two hundred twenty-one billion, two hundred one million, two hundred two thousand, two hundred".