200001002021 has 2 divisors, whose sum is σ = 200001002022. Its totient is φ = 200001002020.

The previous prime is 200001002017. The next prime is 200001002027. The reversal of 200001002021 is 120200100002.

200001002021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161673151396 + 38327850625 = 402086^2 + 195775^2 .

It is a cyclic number.

It is not a de Polignac number, because 200001002021 - 2² = 200001002017 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200001002027) 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 as a sum of consecutive naturals, namely, 100000501010 + 100000501011.

It is an arithmetic number, because the mean of its divisors is an integer number (100000501011).

Almost surely, 2^200001002021 is an apocalyptic number.

It is an amenable number.

200001002021 is a deficient number, since it is larger than the sum of its proper divisors (1).

200001002021 is an equidigital number, since it uses as much as digits as its factorization.

200001002021 is an odious number, because the sum of its binary digits is odd.

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

Adding to 200001002021 its reverse (120200100002), we get a palindrome (320201102023).

The spelling of 200001002021 in words is "two hundred billion, one million, two thousand, twenty-one".