2170213 has 2 divisors, whose sum is σ = 2170214. Its totient is φ = 2170212.

The previous prime is 2170193. The next prime is 2170219. The reversal of 2170213 is 3120712.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2169729 + 484 = 1473^2 + 22^2 .

It is a cyclic number.

It is not a de Polignac number, because 2170213 - 2⁹ = 2169701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2170219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1085106 + 1085107.

It is an arithmetic number, because the mean of its divisors is an integer number (1085107).

2^2170213 is an apocalyptic number.

It is an amenable number.

2170213 is a deficient number, since it is larger than the sum of its proper divisors (1).

2170213 is an equidigital number, since it uses as much as digits as its factorization.

2170213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 2170213 is about 1473.1642814025. The cubic root of 2170213 is about 129.4694948595.

Adding to 2170213 its reverse (3120712), we get a palindrome (5290925).

The spelling of 2170213 in words is "two million, one hundred seventy thousand, two hundred thirteen".