200000010000021 has 16 divisors (see below), whose sum is σ = 332467549091328. Its totient is φ = 103896109090800.

The previous prime is 200000010000001. The next prime is 200000010000061. The reversal of 200000010000021 is 120000010000002.

It is a happy number.

It is not a de Polignac number, because 200000010000021 - 2¹³ = 200000009991829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200000009999964 and 200000010000009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200000010000001) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 432900454315 + ... + 432900454776.

It is an arithmetic number, because the mean of its divisors is an integer number (20779221818208).

Almost surely, 2^{200000010000021} is an apocalyptic number.

200000010000021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

200000010000021 is a deficient number, since it is larger than the sum of its proper divisors (132467539091307).

200000010000021 is a wasteful number, since it uses less digits than its factorization.

200000010000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865800909112.

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 200000010000021 its reverse (120000010000002), we get a palindrome (320000020000023).

It can be divided in two parts, 2000000 and 10000021, that added together give a palindrome (12000021).

The spelling of 200000010000021 in words is "two hundred trillion, ten million, twenty-one", and thus it is an aban number.