9221971 has 8 divisors (see below), whose sum is σ = 10407600. Its totient is φ = 8094240.

The previous prime is 9221959. The next prime is 9221983. The reversal of 9221971 is 1791229.

It is an interprime number because it is at equal distance from previous prime (9221959) and next prime (9221983).

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

It is not a de Polignac number, because 9221971 - 2¹¹ = 9219923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9221921) 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, 14136 + ... + 14773.

It is an arithmetic number, because the mean of its divisors is an integer number (1300950).

Almost surely, 2^9221971 is an apocalyptic number.

9221971 is a deficient number, since it is larger than the sum of its proper divisors (1185629).

9221971 is a wasteful number, since it uses less digits than its factorization.

9221971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28949.

The product of its digits is 2268, while the sum is 31.

The square root of 9221971 is about 3036.7698299344. The cubic root of 9221971 is about 209.7045808323.

The spelling of 9221971 in words is "nine million, two hundred twenty-one thousand, nine hundred seventy-one".