2001021102200 has 96 divisors (see below), whose sum is σ = 4742085170160. Its totient is φ = 785076864000.

The previous prime is 2001021102191. The next prime is 2001021102251. The reversal of 2001021102200 is 22011201002.

It is a happy number.

It is a super-3 number, since 3×2001021102200³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2801750 + ... + 3442650.

Almost surely, 2^{2001021102200} is an apocalyptic number.

2001021102200 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 2001021102200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2371042585080).

2001021102200 is an abundant number, since it is smaller than the sum of its proper divisors (2741064067960).

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

2001021102200 is a wasteful number, since it uses less digits than its factorization.

2001021102200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641217 (or 641208 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2001021102200 its reverse (22011201002), we get a palindrome (2023032303202).

The spelling of 2001021102200 in words is "two trillion, one billion, twenty-one million, one hundred two thousand, two hundred".