9120218 has 4 divisors (see below), whose sum is σ = 13680330. Its totient is φ = 4560108.

The previous prime is 9120217. The next prime is 9120233. The reversal of 9120218 is 8120219.

9120218 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: 8120219 = 23 ⋅353053.

It can be written as a sum of positive squares in only one way, i.e., 8392609 + 727609 = 2897^2 + 853^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9120193 and 9120202.

It is not an unprimeable number, because it can be changed into a prime (9120217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2280053 + ... + 2280056.

Almost surely, 2^9120218 is an apocalyptic number.

9120218 is a deficient number, since it is larger than the sum of its proper divisors (4560112).

9120218 is a wasteful number, since it uses less digits than its factorization.

9120218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4560111.

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

The square root of 9120218 is about 3019.9698673993. The cubic root of 9120218 is about 208.9304500616.

Subtracting from 9120218 its reverse (8120219), we obtain a palindrome (999999).

The spelling of 9120218 in words is "nine million, one hundred twenty thousand, two hundred eighteen".