8221011 has 4 divisors (see below), whose sum is σ = 10961352. Its totient is φ = 5480672.

The previous prime is 8221009. The next prime is 8221021. The reversal of 8221011 is 1101228.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8221011 - 2¹ = 8221009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8221021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1370166 + ... + 1370171.

It is an arithmetic number, because the mean of its divisors is an integer number (2740338).

Almost surely, 2^8221011 is an apocalyptic number.

8221011 is a deficient number, since it is larger than the sum of its proper divisors (2740341).

8221011 is a wasteful number, since it uses less digits than its factorization.

8221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2740340.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 8221011 is about 2867.2305453172. The cubic root of 8221011 is about 201.8250535729.

Adding to 8221011 its reverse (1101228), we get a palindrome (9322239).

The spelling of 8221011 in words is "eight million, two hundred twenty-one thousand, eleven".