8211213 has 12 divisors (see below), whose sum is σ = 12300288. Its totient is φ = 5473980.

The previous prime is 8211197. The next prime is 8211227. The reversal of 8211213 is 3121128.

It is not a de Polignac number, because 8211213 - 2⁴ = 8211197 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8211013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16653 + ... + 17138.

It is an arithmetic number, because the mean of its divisors is an integer number (1025024).

Almost surely, 2^8211213 is an apocalyptic number.

It is an amenable number.

8211213 is a deficient number, since it is larger than the sum of its proper divisors (4089075).

8211213 is an equidigital number, since it uses as much as digits as its factorization.

8211213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33806 (or 33794 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 8211213 is about 2865.5214185205. The cubic root of 8211213 is about 201.7448417028.

The spelling of 8211213 in words is "eight million, two hundred eleven thousand, two hundred thirteen".