212082917 has 2 divisors, whose sum is σ = 212082918. Its totient is φ = 212082916.

The previous prime is 212082889. The next prime is 212082953. The reversal of 212082917 is 719280212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153115876 + 58967041 = 12374^2 + 7679^2 .

It is a cyclic number.

It is not a de Polignac number, because 212082917 - 2¹⁰ = 212081893 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212082317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106041458 + 106041459.

It is an arithmetic number, because the mean of its divisors is an integer number (106041459).

Almost surely, 2^212082917 is an apocalyptic number.

It is an amenable number.

212082917 is a deficient number, since it is larger than the sum of its proper divisors (1).

212082917 is an equidigital number, since it uses as much as digits as its factorization.

212082917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 212082917 is about 14563.0668816702. The cubic root of 212082917 is about 596.3509233533.

The spelling of 212082917 in words is "two hundred twelve million, eighty-two thousand, nine hundred seventeen".