8206221 has 8 divisors (see below), whose sum is σ = 10954944. Its totient is φ = 5464160.

The previous prime is 8206207. The next prime is 8206229. The reversal of 8206221 is 1226028.

8206221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 8206221 - 2¹⁴ = 8189837 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 (8206229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3520 + ... + 5366.

It is an arithmetic number, because the mean of its divisors is an integer number (1369368).

Almost surely, 2^8206221 is an apocalyptic number.

It is an amenable number.

8206221 is a deficient number, since it is larger than the sum of its proper divisors (2748723).

8206221 is a wasteful number, since it uses less digits than its factorization.

8206221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3331.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 8206221 is about 2864.6502404308. The cubic root of 8206221 is about 201.7039498797.

The spelling of 8206221 in words is "eight million, two hundred six thousand, two hundred twenty-one".