201021201122200 has 96 divisors (see below), whose sum is σ = 495015847605360. Its totient is φ = 75655791411200.

The previous prime is 201021201122141. The next prime is 201021201122201. The reversal of 201021201122200 is 2221102120102.

It is a happy number.

It is a super-2 number, since 2×201021201122200² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201021201122201) 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, 2402040 + ... + 20194360.

Almost surely, 2^{201021201122200} is an apocalyptic number.

201021201122200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201021201122200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247507923802680).

201021201122200 is an abundant number, since it is smaller than the sum of its proper divisors (293994646483160).

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

201021201122200 is a wasteful number, since it uses less digits than its factorization.

201021201122200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17795677 (or 17795668 counting only the distinct ones).

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

Adding to 201021201122200 its reverse (2221102120102), we get a palindrome (203242303242302).

The spelling of 201021201122200 in words is "two hundred one trillion, twenty-one billion, two hundred one million, one hundred twenty-two thousand, two hundred".