200021020000 has 120 divisors (see below), whose sum is σ = 492409453536. Its totient is φ = 79955136000.

The previous prime is 200021019973. The next prime is 200021020007. The reversal of 200021020000 is 20120002.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200021020007) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 45737814 + ... + 45742186.

Almost surely, 2^200021020000 is an apocalyptic number.

200021020000 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 200021020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246204726768).

200021020000 is an abundant number, since it is smaller than the sum of its proper divisors (292388433536).

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

200021020000 is an equidigital number, since it uses as much as digits as its factorization.

200021020000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6690 (or 6667 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

Adding to 200021020000 its reverse (20120002), we get a palindrome (200041140002).

The spelling of 200021020000 in words is "two hundred billion, twenty-one million, twenty thousand".