212202030217 has 2 divisors, whose sum is σ = 212202030218. Its totient is φ = 212202030216.

The previous prime is 212202030163. The next prime is 212202030241. The reversal of 212202030217 is 712030202212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170559914121 + 41642116096 = 412989^2 + 204064^2 .

It is a cyclic number.

It is not a de Polignac number, because 212202030217 - 2¹¹ = 212202028169 is a prime.

It is not a weakly prime, because it can be changed into another prime (212202030247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106101015108 + 106101015109.

It is an arithmetic number, because the mean of its divisors is an integer number (106101015109).

Almost surely, 2^212202030217 is an apocalyptic number.

It is an amenable number.

212202030217 is a deficient number, since it is larger than the sum of its proper divisors (1).

212202030217 is an equidigital number, since it uses as much as digits as its factorization.

212202030217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

Adding to 212202030217 its reverse (712030202212), we get a palindrome (924232232429).

The spelling of 212202030217 in words is "two hundred twelve billion, two hundred two million, thirty thousand, two hundred seventeen".