201021000221200 has 120 divisors (see below), whose sum is σ = 483166229275008. Its totient is φ = 80372900375040.

The previous prime is 201021000221189. The next prime is 201021000221203. The reversal of 201021000221200 is 2122000120102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (201021000221203) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 10690890999 + ... + 10690909801.

Almost surely, 2^{201021000221200} is an apocalyptic number.

201021000221200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201021000221200 is an abundant number, since it is smaller than the sum of its proper divisors (282145229053808).

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

201021000221200 is a wasteful number, since it uses less digits than its factorization.

201021000221200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29201 (or 29190 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 201021000221200 its reverse (2122000120102), we get a palindrome (203143000341302).

The spelling of 201021000221200 in words is "two hundred one trillion, twenty-one billion, two hundred twenty-one thousand, two hundred".