212016916897 has 2 divisors, whose sum is σ = 212016916898. Its totient is φ = 212016916896.

The previous prime is 212016916849. The next prime is 212016916963. The reversal of 212016916897 is 798619610212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127198509201 + 84818407696 = 356649^2 + 291236^2 .

It is a cyclic number.

It is not a de Polignac number, because 212016916897 - 2¹¹ = 212016914849 is a prime.

It is not a weakly prime, because it can be changed into another prime (212016916807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106008458448 + 106008458449.

It is an arithmetic number, because the mean of its divisors is an integer number (106008458449).

Almost surely, 2^212016916897 is an apocalyptic number.

It is an amenable number.

212016916897 is a deficient number, since it is larger than the sum of its proper divisors (1).

212016916897 is an equidigital number, since it uses as much as digits as its factorization.

212016916897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 52.

The spelling of 212016916897 in words is "two hundred twelve billion, sixteen million, nine hundred sixteen thousand, eight hundred ninety-seven".