122217 has 4 divisors (see below), whose sum is σ = 162960. Its totient is φ = 81476.

The previous prime is 122209. The next prime is 122219. The reversal of 122217 is 712221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122217 - 2³ = 122209 is a prime.

It is an Ulam number.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 122196 and 122205.

It is not an unprimeable number, because it can be changed into a prime (122219) 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, 20367 + ... + 20372.

It is an arithmetic number, because the mean of its divisors is an integer number (40740).

2¹²²²¹⁷ is an apocalyptic number.

It is an amenable number.

122217 is a deficient number, since it is larger than the sum of its proper divisors (40743).

122217 is an equidigital number, since it uses as much as digits as its factorization.

122217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40742.

The product of its digits is 56, while the sum is 15.

The square root of 122217 is about 349.5954805200. The cubic root of 122217 is about 49.6261449484.

Adding to 122217 its reverse (712221), we get a palindrome (834438).

The spelling of 122217 in words is "one hundred twenty-two thousand, two hundred seventeen", and thus it is an iban number.