200020221100 has 144 divisors (see below), whose sum is σ = 501387631360. Its totient is φ = 67842489600.

The previous prime is 200020221043. The next prime is 200020221131. The reversal of 200020221100 is 1122020002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60046435 + ... + 60049765.

Almost surely, 2^200020221100 is an apocalyptic number.

200020221100 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 200020221100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250693815680).

200020221100 is an abundant number, since it is smaller than the sum of its proper divisors (301367410260).

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

200020221100 is a wasteful number, since it uses less digits than its factorization.

200020221100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4248 (or 4241 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 200020221100 its reverse (1122020002), we get a palindrome (201142241102).

The spelling of 200020221100 in words is "two hundred billion, twenty million, two hundred twenty-one thousand, one hundred".