212071 has 4 divisors (see below), whose sum is σ = 218944. Its totient is φ = 205200.

The previous prime is 212057. The next prime is 212081. The reversal of 212071 is 170212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212071 - 2⁵ = 212039 is a prime.

It is a Duffinian number.

212071 is a lucky number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212081) 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 in 3 ways as a sum of consecutive naturals, for example, 3390 + ... + 3451.

It is an arithmetic number, because the mean of its divisors is an integer number (54736).

2²¹²⁰⁷¹ is an apocalyptic number.

212071 is a deficient number, since it is larger than the sum of its proper divisors (6873).

212071 is an equidigital number, since it uses as much as digits as its factorization.

212071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6872.

The product of its (nonzero) digits is 28, while the sum is 13.

The square root of 212071 is about 460.5116719476. The cubic root of 212071 is about 59.6339753434.

Adding to 212071 its reverse (170212), we get a palindrome (382283).

It can be divided in two parts, 2 and 12071, that multiplied together give a palindrome (24142).

The spelling of 212071 in words is "two hundred twelve thousand, seventy-one", and thus it is an iban number.