2112217 has 2 divisors, whose sum is σ = 2112218. Its totient is φ = 2112216.

The previous prime is 2112193. The next prime is 2112239. The reversal of 2112217 is 7122112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1245456 + 866761 = 1116^2 + 931^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2112217 is a prime.

It is a super-2 number, since 2×2112217² = 8922921310178, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2112217.

It is not a weakly prime, because it can be changed into another prime (2112017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056108 + 1056109.

It is an arithmetic number, because the mean of its divisors is an integer number (1056109).

2^2112217 is an apocalyptic number.

It is an amenable number.

2112217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112217 is an equidigital number, since it uses as much as digits as its factorization.

2112217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56, while the sum is 16.

The square root of 2112217 is about 1453.3468271545. The cubic root of 2112217 is about 128.3057672094.

Adding to 2112217 its reverse (7122112), we get a palindrome (9234329).

The spelling of 2112217 in words is "two million, one hundred twelve thousand, two hundred seventeen".