8212229 has 4 divisors (see below), whose sum is σ = 8218080. Its totient is φ = 8206380.

The previous prime is 8212213. The next prime is 8212277. The reversal of 8212229 is 9222128.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 8212229 - 2⁴ = 8212213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8212198 and 8212207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8217229) 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 3 ways as a sum of consecutive naturals, for example, 584 + ... + 4094.

It is an arithmetic number, because the mean of its divisors is an integer number (2054520).

Almost surely, 2^8212229 is an apocalyptic number.

It is an amenable number.

8212229 is a deficient number, since it is larger than the sum of its proper divisors (5851).

8212229 is a wasteful number, since it uses less digits than its factorization.

8212229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5850.

The product of its digits is 1152, while the sum is 26.

The square root of 8212229 is about 2865.6986931637. The cubic root of 8212229 is about 201.7531622074.

The spelling of 8212229 in words is "eight million, two hundred twelve thousand, two hundred twenty-nine".