212067217 has 2 divisors, whose sum is σ = 212067218. Its totient is φ = 212067216.

The previous prime is 212067179. The next prime is 212067223. The reversal of 212067217 is 712760212.

212067217 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., 194769936 + 17297281 = 13956^2 + 4159^2 .

It is a cyclic number.

It is not a de Polignac number, because 212067217 - 2¹¹ = 212065169 is a prime.

It is a super-2 number, since 2×212067217² = 89945009052250178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212067277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106033608 + 106033609.

It is an arithmetic number, because the mean of its divisors is an integer number (106033609).

Almost surely, 2^212067217 is an apocalyptic number.

It is an amenable number.

212067217 is a deficient number, since it is larger than the sum of its proper divisors (1).

212067217 is an equidigital number, since it uses as much as digits as its factorization.

212067217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 212067217 is about 14562.5278368833. The cubic root of 212067217 is about 596.3362075043.

The spelling of 212067217 in words is "two hundred twelve million, sixty-seven thousand, two hundred seventeen".