201221202011200 has 84 divisors (see below), whose sum is σ = 565862765972992. Its totient is φ = 68990126400000.

The previous prime is 201221202011189. The next prime is 201221202011237. The reversal of 201221202011200 is 2110202122102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8983078176 + ... + 8983100575.

Almost surely, 2^{201221202011200} is an apocalyptic number.

201221202011200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201221202011200 is an abundant number, since it is smaller than the sum of its proper divisors (364641563961792).

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

201221202011200 is a wasteful number, since it uses less digits than its factorization.

201221202011200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17966178780 (or 17966178765 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 201221202011200 its reverse (2110202122102), we get a palindrome (203331404133302).

The spelling of 201221202011200 in words is "two hundred one trillion, two hundred twenty-one billion, two hundred two million, eleven thousand, two hundred".