9221161 has 2 divisors, whose sum is σ = 9221162. Its totient is φ = 9221160.

The previous prime is 9221131. The next prime is 9221171. The reversal of 9221161 is 1611229.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7595536 + 1625625 = 2756^2 + 1275^2 .

It is a cyclic number.

It is not a de Polignac number, because 9221161 - 2⁷ = 9221033 is a prime.

It is equal to p₆₁₆₂₄₃ and since 9221161 and 616243 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (9221131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4610580 + 4610581.

It is an arithmetic number, because the mean of its divisors is an integer number (4610581).

Almost surely, 2^9221161 is an apocalyptic number.

It is an amenable number.

9221161 is a deficient number, since it is larger than the sum of its proper divisors (1).

9221161 is an equidigital number, since it uses as much as digits as its factorization.

9221161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 22.

The square root of 9221161 is about 3036.6364616134. The cubic root of 9221161 is about 209.6984409416.

The spelling of 9221161 in words is "nine million, two hundred twenty-one thousand, one hundred sixty-one".