2212817 has 2 divisors, whose sum is σ = 2212818. Its totient is φ = 2212816.

The previous prime is 2212783. The next prime is 2212831. The reversal of 2212817 is 7182122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1164241 + 1048576 = 1079^2 + 1024^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212817 - 2⁶ = 2212753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2212792 and 2212801.

It is not a weakly prime, because it can be changed into another prime (2212877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106408 + 1106409.

It is an arithmetic number, because the mean of its divisors is an integer number (1106409).

2^2212817 is an apocalyptic number.

It is an amenable number.

2212817 is a deficient number, since it is larger than the sum of its proper divisors (1).

2212817 is an equidigital number, since it uses as much as digits as its factorization.

2212817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 448, while the sum is 23.

The square root of 2212817 is about 1487.5540326321. The cubic root of 2212817 is about 130.3112266992.

Adding to 2212817 its reverse (7182122), we get a palindrome (9394939).

The spelling of 2212817 in words is "two million, two hundred twelve thousand, eight hundred seventeen".