8002221 has 8 divisors (see below), whose sum is σ = 10701600. Its totient is φ = 5318832.

The previous prime is 8002219. The next prime is 8002243. The reversal of 8002221 is 1222008.

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

It is not a de Polignac number, because 8002221 - 2¹ = 8002219 is a prime.

8002221 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 8002221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8002201) 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, 2775 + ... + 4868.

It is an arithmetic number, because the mean of its divisors is an integer number (1337700).

Almost surely, 2^8002221 is an apocalyptic number.

It is an amenable number.

8002221 is a deficient number, since it is larger than the sum of its proper divisors (2699379).

8002221 is a wasteful number, since it uses less digits than its factorization.

8002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7995.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 8002221 is about 2828.8197185399. The cubic root of 8002221 is about 200.0185066208.

Adding to 8002221 its reverse (1222008), we get a palindrome (9224229).

The spelling of 8002221 in words is "eight million, two thousand, two hundred twenty-one".