210210001 has 2 divisors, whose sum is σ = 210210002. Its totient is φ = 210210000.

The previous prime is 210209999. The next prime is 210210017. The reversal of 210210001 is 100012012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210105025 + 104976 = 14495^2 + 324^2 .

It is a cyclic number.

It is not a de Polignac number, because 210210001 - 2¹ = 210209999 is a prime.

Together with 210209999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (210210071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105105000 + 105105001.

It is an arithmetic number, because the mean of its divisors is an integer number (105105001).

Almost surely, 2^210210001 is an apocalyptic number.

It is an amenable number.

210210001 is a deficient number, since it is larger than the sum of its proper divisors (1).

210210001 is an equidigital number, since it uses as much as digits as its factorization.

210210001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 210210001 is about 14498.6206585316. The cubic root of 210210001 is about 594.5902609440.

Adding to 210210001 its reverse (100012012), we get a palindrome (310222013).

The spelling of 210210001 in words is "two hundred ten million, two hundred ten thousand, one".