200021221110020 has 12 divisors (see below), whose sum is σ = 420044564331084. Its totient is φ = 80008488444000.

The previous prime is 200021221109999. The next prime is 200021221110043. The reversal of 200021221110020 is 20011122120002.

It can be written as a sum of positive squares in 2 ways, for example, as 74219155422916 + 125802065687104 = 8615054^2 + 11216152^2 .

It is a junction number, because it is equal to n+sod(n) for n = 200021221109977 and 200021221110004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5000530527731 + ... + 5000530527770.

It is an arithmetic number, because the mean of its divisors is an integer number (35003713694257).

Almost surely, 2^{200021221110020} is an apocalyptic number.

200021221110020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200021221110020 is an abundant number, since it is smaller than the sum of its proper divisors (220023343221064).

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

200021221110020 is a wasteful number, since it uses less digits than its factorization.

200021221110020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10001061055510 (or 10001061055508 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 200021221110020 its reverse (20011122120002), we get a palindrome (220032343230022).

The spelling of 200021221110020 in words is "two hundred trillion, twenty-one billion, two hundred twenty-one million, one hundred ten thousand, twenty".