2212217 has 4 divisors (see below), whose sum is σ = 2528256. Its totient is φ = 1896180.

The previous prime is 2212187. The next prime is 2212219. The reversal of 2212217 is 7122122.

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 2212217 - 2⁶ = 2212153 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2212195 and 2212204.

It is not an unprimeable number, because it can be changed into a prime (2212219) 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, 158009 + ... + 158022.

It is an arithmetic number, because the mean of its divisors is an integer number (632064).

2^2212217 is an apocalyptic number.

It is an amenable number.

2212217 is a deficient number, since it is larger than the sum of its proper divisors (316039).

2212217 is an equidigital number, since it uses as much as digits as its factorization.

2212217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316038.

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

The square root of 2212217 is about 1487.3523456128. The cubic root of 2212217 is about 130.2994477761.

Adding to 2212217 its reverse (7122122), we get a palindrome (9334339).

The spelling of 2212217 in words is "two million, two hundred twelve thousand, two hundred seventeen".