9112221 has 12 divisors (see below), whose sum is σ = 13936572. Its totient is φ = 5717376.

The previous prime is 9112193. The next prime is 9112223. The reversal of 9112221 is 1222119.

It can be written as a sum of positive squares in 2 ways, for example, as 4536900 + 4575321 = 2130^2 + 2139^2 .

It is not a de Polignac number, because 9112221 - 2⁶ = 9112157 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 9112194 and 9112203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9112223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29626 + ... + 29931.

It is an arithmetic number, because the mean of its divisors is an integer number (1161381).

Almost surely, 2^9112221 is an apocalyptic number.

It is an amenable number.

9112221 is a deficient number, since it is larger than the sum of its proper divisors (4824351).

9112221 is a wasteful number, since it uses less digits than its factorization.

9112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59580 (or 59577 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 9112221 is about 3018.6455571995. The cubic root of 9112221 is about 208.8693657982.

It can be divided in two parts, 91 and 12221, that multiplied together give a palindrome (1112111).

The spelling of 9112221 in words is "nine million, one hundred twelve thousand, two hundred twenty-one".