200121222020200 has 768 divisors, whose sum is σ = 552199032000000. Its totient is φ = 66779627765760.

The previous prime is 200121222020117. The next prime is 200121222020261. The reversal of 200121222020200 is 2020222121002.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 42051105421 + ... + 42051110179.

It is an arithmetic number, because the mean of its divisors is an integer number (719009156250).

Almost surely, 2^{200121222020200} is an apocalyptic number.

200121222020200 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 200121222020200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276099516000000).

200121222020200 is an abundant number, since it is smaller than the sum of its proper divisors (352077809979800).

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

200121222020200 is a wasteful number, since it uses less digits than its factorization.

200121222020200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5182 (or 5173 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 200121222020200 its reverse (2020222121002), we get a palindrome (202141444141202).

The spelling of 200121222020200 in words is "two hundred trillion, one hundred twenty-one billion, two hundred twenty-two million, twenty thousand, two hundred".