8221901 has 8 divisors (see below), whose sum is σ = 8452224. Its totient is φ = 7993440.

The previous prime is 8221891. The next prime is 8221903. The reversal of 8221901 is 1091228.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8221901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8221903) 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, 15521 + ... + 16041.

It is an arithmetic number, because the mean of its divisors is an integer number (1056528).

Almost surely, 2^8221901 is an apocalyptic number.

It is an amenable number.

8221901 is a deficient number, since it is larger than the sum of its proper divisors (230323).

8221901 is a wasteful number, since it uses less digits than its factorization.

8221901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 8221901 is about 2867.3857431465. The cubic root of 8221901 is about 201.8323364491.

The spelling of 8221901 in words is "eight million, two hundred twenty-one thousand, nine hundred one".