9162221 has 2 divisors, whose sum is σ = 9162222. Its totient is φ = 9162220.

The previous prime is 9162203. The next prime is 9162233. The reversal of 9162221 is 1222619.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9066121 + 96100 = 3011^2 + 310^2 .

It is a cyclic number.

It is not a de Polignac number, because 9162221 - 2²² = 4967917 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p₆₁₂₅₃₆ and since 9162221 and 612536 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9162281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4581110 + 4581111.

It is an arithmetic number, because the mean of its divisors is an integer number (4581111).

Almost surely, 2^9162221 is an apocalyptic number.

It is an amenable number.

9162221 is a deficient number, since it is larger than the sum of its proper divisors (1).

9162221 is an equidigital number, since it uses as much as digits as its factorization.

9162221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 23.

The square root of 9162221 is about 3026.9160873734. The cubic root of 9162221 is about 209.2507007376.

The spelling of 9162221 in words is "nine million, one hundred sixty-two thousand, two hundred twenty-one".