210221200003 has 2 divisors, whose sum is σ = 210221200004. Its totient is φ = 210221200002.

The previous prime is 210221200001. The next prime is 210221200039. The reversal of 210221200003 is 300002122012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210221200003 - 2¹ = 210221200001 is a prime.

Together with 210221200001, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (210221200001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105110600001 + 105110600002.

It is an arithmetic number, because the mean of its divisors is an integer number (105110600002).

Almost surely, 2^210221200003 is an apocalyptic number.

210221200003 is a deficient number, since it is larger than the sum of its proper divisors (1).

210221200003 is an equidigital number, since it uses as much as digits as its factorization.

210221200003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 210221200003 its reverse (300002122012), we get a palindrome (510223322015).

It can be divided in two parts, 21022 and 1200003, that added together give a square (1221025 = 1105²).

The spelling of 210221200003 in words is "two hundred ten billion, two hundred twenty-one million, two hundred thousand, three".