210010211071021 has 2 divisors, whose sum is σ = 210010211071022. Its totient is φ = 210010211071020.

The previous prime is 210010211070929. The next prime is 210010211071097. The reversal of 210010211071021 is 120170112010012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135649580796900 + 74360630274121 = 11646870^2 + 8623261^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210010211071021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210010211071021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210010211074021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105005105535510 + 105005105535511.

It is an arithmetic number, because the mean of its divisors is an integer number (105005105535511).

Almost surely, 2^{210010211071021} is an apocalyptic number.

It is an amenable number.

210010211071021 is a deficient number, since it is larger than the sum of its proper divisors (1).

210010211071021 is an equidigital number, since it uses as much as digits as its factorization.

210010211071021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 19.

Adding to 210010211071021 its reverse (120170112010012), we get a palindrome (330180323081033).

The spelling of 210010211071021 in words is "two hundred ten trillion, ten billion, two hundred eleven million, seventy-one thousand, twenty-one".