2122817 has 2 divisors, whose sum is σ = 2122818. Its totient is φ = 2122816.

The previous prime is 2122793. The next prime is 2122823. The reversal of 2122817 is 7182212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1893376 + 229441 = 1376^2 + 479^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122817 - 2⁶ = 2122753 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2122792 and 2122801.

It is not a weakly prime, because it can be changed into another prime (2122837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061408 + 1061409.

It is an arithmetic number, because the mean of its divisors is an integer number (1061409).

2^2122817 is an apocalyptic number.

It is an amenable number.

2122817 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122817 is an equidigital number, since it uses as much as digits as its factorization.

2122817 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 2122817 is about 1456.9890184898. The cubic root of 2122817 is about 128.5200400748.

The spelling of 2122817 in words is "two million, one hundred twenty-two thousand, eight hundred seventeen".