8211211 has 8 divisors (see below), whose sum is σ = 8712000. Its totient is φ = 7717320.

The previous prime is 8211197. The next prime is 8211227. The reversal of 8211211 is 1121128.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8211211 - 2¹⁷ = 8080139 is a prime.

It is a Duffinian number.

8211211 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8211011) 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 7 ways as a sum of consecutive naturals, for example, 840 + ... + 4138.

It is an arithmetic number, because the mean of its divisors is an integer number (1089000).

Almost surely, 2^8211211 is an apocalyptic number.

8211211 is the 1282-nd centered decagonal number.

8211211 is a deficient number, since it is larger than the sum of its proper divisors (500789).

8211211 is a wasteful number, since it uses less digits than its factorization.

8211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3449.

The product of its digits is 32, while the sum is 16.

The square root of 8211211 is about 2865.5210695439. The cubic root of 8211211 is about 201.7448253232.

Adding to 8211211 its reverse (1121128), we get a palindrome (9332339).

The spelling of 8211211 in words is "eight million, two hundred eleven thousand, two hundred eleven".