210534234217 has 2 divisors, whose sum is σ = 210534234218. Its totient is φ = 210534234216.

The previous prime is 210534234187. The next prime is 210534234227. The reversal of 210534234217 is 712432435012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133411945536 + 77122288681 = 365256^2 + 277709^2 .

It is a cyclic number.

It is not a de Polignac number, because 210534234217 - 2⁷ = 210534234089 is a prime.

It is a super-2 number, since 2×210534234217² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (210534234227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105267117108 + 105267117109.

It is an arithmetic number, because the mean of its divisors is an integer number (105267117109).

Almost surely, 2^210534234217 is an apocalyptic number.

It is an amenable number.

210534234217 is a deficient number, since it is larger than the sum of its proper divisors (1).

210534234217 is an equidigital number, since it uses as much as digits as its factorization.

210534234217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 34.

Adding to 210534234217 its reverse (712432435012), we get a palindrome (922966669229).

The spelling of 210534234217 in words is "two hundred ten billion, five hundred thirty-four million, two hundred thirty-four thousand, two hundred seventeen".