9116221 has 8 divisors (see below), whose sum is σ = 9349184. Its totient is φ = 8886240.

The previous prime is 9116213. The next prime is 9116243. The reversal of 9116221 is 1226119.

9116221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 9116221 - 2³ = 9116213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9116192 and 9116201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9116281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6241 + ... + 7561.

It is an arithmetic number, because the mean of its divisors is an integer number (1168648).

Almost surely, 2^9116221 is an apocalyptic number.

It is an amenable number.

9116221 is a deficient number, since it is larger than the sum of its proper divisors (232963).

9116221 is a wasteful number, since it uses less digits than its factorization.

9116221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491.

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

The square root of 9116221 is about 3019.3080333083. The cubic root of 9116221 is about 208.8999238529.

The spelling of 9116221 in words is "nine million, one hundred sixteen thousand, two hundred twenty-one".