9221081 has 4 divisors (see below), whose sum is σ = 9279972. Its totient is φ = 9162192.

The previous prime is 9221077. The next prime is 9221083. The reversal of 9221081 is 1801229.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6677056 + 2544025 = 2584^2 + 1595^2 .

It is a cyclic number.

It is not a de Polignac number, because 9221081 - 2² = 9221077 is a prime.

It is a super-2 number, since 2×9221081² = 170056669617122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9221083) 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 3 ways as a sum of consecutive naturals, for example, 29210 + ... + 29523.

It is an arithmetic number, because the mean of its divisors is an integer number (2319993).

Almost surely, 2^9221081 is an apocalyptic number.

It is an amenable number.

9221081 is a deficient number, since it is larger than the sum of its proper divisors (58891).

9221081 is a wasteful number, since it uses less digits than its factorization.

9221081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58890.

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

The square root of 9221081 is about 3036.6232891157. The cubic root of 9221081 is about 209.6978345131.

The spelling of 9221081 in words is "nine million, two hundred twenty-one thousand, eighty-one".