20021000000200 has 24 divisors (see below), whose sum is σ = 46548825000930. Its totient is φ = 8008400000000.

The previous prime is 20021000000191. The next prime is 20021000000219. The reversal of 20021000000200 is 200000012002.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 9991529039844 + 10029470960356 = 3160938^2 + 3166934^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 50052499801 + ... + 50052500200.

Almost surely, 2^{20021000000200} is an apocalyptic number.

20021000000200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021000000200 is an abundant number, since it is smaller than the sum of its proper divisors (26527825000730).

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

20021000000200 is a wasteful number, since it uses less digits than its factorization.

20021000000200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100105000017 (or 100105000008 counting only the distinct ones).

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

Adding to 20021000000200 its reverse (200000012002), we get a palindrome (20221000012202).

The spelling of 20021000000200 in words is "twenty trillion, twenty-one billion, two hundred", and thus it is an aban number.