2120017 has 2 divisors, whose sum is σ = 2120018. Its totient is φ = 2120016.

The previous prime is 2120009. The next prime is 2120021. The reversal of 2120017 is 7100212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2119936 + 81 = 1456^2 + 9^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120017 - 2³ = 2120009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2119979 and 2120006.

It is not a weakly prime, because it can be changed into another prime (2120057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060008 + 1060009.

It is an arithmetic number, because the mean of its divisors is an integer number (1060009).

2^2120017 is an apocalyptic number.

It is an amenable number.

2120017 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120017 is an equidigital number, since it uses as much as digits as its factorization.

2120017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28, while the sum is 13.

The square root of 2120017 is about 1456.0278156684. The cubic root of 2120017 is about 128.4635091467.

Adding to 2120017 its reverse (7100212), we get a palindrome (9220229).

The spelling of 2120017 in words is "two million, one hundred twenty thousand, seventeen".