200200021 has 8 divisors (see below), whose sum is σ = 236689920. Its totient is φ = 165682608.

The previous prime is 200200019. The next prime is 200200031. The reversal of 200200021 is 120002002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 200200021 - 2¹ = 200200019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200199977 and 200200013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200200031) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 492901 + ... + 493306.

It is an arithmetic number, because the mean of its divisors is an integer number (29586240).

Almost surely, 2^200200021 is an apocalyptic number.

It is an amenable number.

200200021 is a deficient number, since it is larger than the sum of its proper divisors (36489899).

200200021 is an equidigital number, since it uses as much as digits as its factorization.

200200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986243.

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

The square root of 200200021 is about 14149.2056667503. The cubic root of 200200021 is about 584.9984376708.

Adding to 200200021 its reverse (120002002), we get a palindrome (320202023).

The spelling of 200200021 in words is "two hundred million, two hundred thousand, twenty-one".