20210220200 has 96 divisors (see below), whose sum is σ = 50668632000. Its totient is φ = 7471756800.

The previous prime is 20210220193. The next prime is 20210220209. The reversal of 20210220200 is 202201202.

It is not an unprimeable number, because it can be changed into a prime (20210220209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90941 + ... + 220659.

It is an arithmetic number, because the mean of its divisors is an integer number (527798250).

Almost surely, 2^20210220200 is an apocalyptic number.

20210220200 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 20210220200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25334316000).

20210220200 is an abundant number, since it is smaller than the sum of its proper divisors (30458411800).

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

20210220200 is a wasteful number, since it uses less digits than its factorization.

20210220200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129795 (or 129786 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 20210220200 its reverse (202201202), we get a palindrome (20412421402).

The spelling of 20210220200 in words is "twenty billion, two hundred ten million, two hundred twenty thousand, two hundred".