212104817 has 2 divisors, whose sum is σ = 212104818. Its totient is φ = 212104816.

The previous prime is 212104787. The next prime is 212104829. The reversal of 212104817 is 718401212.

212104817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174662656 + 37442161 = 13216^2 + 6119^2 .

It is a cyclic number.

It is not a de Polignac number, because 212104817 - 2¹⁶ = 212039281 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212104897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106052408 + 106052409.

It is an arithmetic number, because the mean of its divisors is an integer number (106052409).

Almost surely, 2^212104817 is an apocalyptic number.

It is an amenable number.

212104817 is a deficient number, since it is larger than the sum of its proper divisors (1).

212104817 is an equidigital number, since it uses as much as digits as its factorization.

212104817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 212104817 is about 14563.8187643214. The cubic root of 212104817 is about 596.3714493436.

The spelling of 212104817 in words is "two hundred twelve million, one hundred four thousand, eight hundred seventeen".