210002101601 has 2 divisors, whose sum is σ = 210002101602. Its totient is φ = 210002101600.

The previous prime is 210002101597. The next prime is 210002101627. The reversal of 210002101601 is 106101200012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137344360000 + 72657741601 = 370600^2 + 269551^2 .

It is a cyclic number.

It is not a de Polignac number, because 210002101601 - 2² = 210002101597 is a prime.

It is not a weakly prime, because it can be changed into another prime (210002101201) 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, 105001050800 + 105001050801.

It is an arithmetic number, because the mean of its divisors is an integer number (105001050801).

Almost surely, 2^210002101601 is an apocalyptic number.

It is an amenable number.

210002101601 is a deficient number, since it is larger than the sum of its proper divisors (1).

210002101601 is an equidigital number, since it uses as much as digits as its factorization.

210002101601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 210002101601 its reverse (106101200012), we get a palindrome (316103301613).

The spelling of 210002101601 in words is "two hundred ten billion, two million, one hundred one thousand, six hundred one".