212168171 has 2 divisors, whose sum is σ = 212168172. Its totient is φ = 212168170.

The previous prime is 212168141. The next prime is 212168227. The reversal of 212168171 is 171861212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212168171 - 2⁶ = 212168107 is a prime.

It is not a weakly prime, because it can be changed into another prime (212168141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106084085 + 106084086.

It is an arithmetic number, because the mean of its divisors is an integer number (106084086).

Almost surely, 2^212168171 is an apocalyptic number.

212168171 is a deficient number, since it is larger than the sum of its proper divisors (1).

212168171 is an equidigital number, since it uses as much as digits as its factorization.

212168171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 29.

The square root of 212168171 is about 14565.9936495936. The cubic root of 212168171 is about 596.4308205485.

The spelling of 212168171 in words is "two hundred twelve million, one hundred sixty-eight thousand, one hundred seventy-one".