210211010173 has 2 divisors, whose sum is σ = 210211010174. Its totient is φ = 210211010172.

The previous prime is 210211010171. The next prime is 210211010203. The reversal of 210211010173 is 371010112012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204682046724 + 5528963449 = 452418^2 + 74357^2 .

It is a cyclic number.

It is not a de Polignac number, because 210211010173 - 2¹ = 210211010171 is a prime.

Together with 210211010171, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 210211010173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210211010171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105105505086 + 105105505087.

It is an arithmetic number, because the mean of its divisors is an integer number (105105505087).

Almost surely, 2^210211010173 is an apocalyptic number.

It is an amenable number.

210211010173 is a deficient number, since it is larger than the sum of its proper divisors (1).

210211010173 is an equidigital number, since it uses as much as digits as its factorization.

210211010173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 19.

Adding to 210211010173 its reverse (371010112012), we get a palindrome (581221122185).

The spelling of 210211010173 in words is "two hundred ten billion, two hundred eleven million, ten thousand, one hundred seventy-three".