9221018 has 4 divisors (see below), whose sum is σ = 13831530. Its totient is φ = 4610508.

The previous prime is 9221011. The next prime is 9221027. The reversal of 9221018 is 8101229.

9221018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8101229 = 859 ⋅9431.

It can be written as a sum of positive squares in only one way, i.e., 4739329 + 4481689 = 2177^2 + 2117^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9220984 and 9221002.

It is not an unprimeable number, because it can be changed into a prime (9221011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2305253 + ... + 2305256.

Almost surely, 2^9221018 is an apocalyptic number.

9221018 is a deficient number, since it is larger than the sum of its proper divisors (4610512).

9221018 is a wasteful number, since it uses less digits than its factorization.

9221018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4610511.

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

The square root of 9221018 is about 3036.6129157336. The cubic root of 9221018 is about 209.6973569482.

The spelling of 9221018 in words is "nine million, two hundred twenty-one thousand, eighteen".