212417 has 4 divisors (see below), whose sum is σ = 218196. Its totient is φ = 206640.

The previous prime is 212411. The next prime is 212419. The reversal of 212417 is 714212.

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

It can be written as a sum of positive squares in 2 ways, for example, as 152881 + 59536 = 391^2 + 244^2 .

It is a cyclic number.

It is not a de Polignac number, because 212417 - 2⁶ = 212353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212395 and 212404.

It is not an unprimeable number, because it can be changed into a prime (212411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2834 + ... + 2907.

It is an arithmetic number, because the mean of its divisors is an integer number (54549).

2²¹²⁴¹⁷ is an apocalyptic number.

It is an amenable number.

212417 is a deficient number, since it is larger than the sum of its proper divisors (5779).

212417 is an equidigital number, since it uses as much as digits as its factorization.

212417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5778.

The product of its digits is 112, while the sum is 17.

The square root of 212417 is about 460.8871879321. The cubic root of 212417 is about 59.6663892430. Note that the first 3 decimals are identical.

Adding to 212417 its reverse (714212), we get a palindrome (926629).

The spelling of 212417 in words is "two hundred twelve thousand, four hundred seventeen", and thus it is an iban number.