9112220 has 48 divisors (see below), whose sum is σ = 20871648. Its totient is φ = 3321600.

The previous prime is 9112193. The next prime is 9112223. The reversal of 9112220 is 222119.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26087 + ... + 26433.

It is an arithmetic number, because the mean of its divisors is an integer number (434826).

Almost surely, 2^9112220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9112220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10435824).

9112220 is an abundant number, since it is smaller than the sum of its proper divisors (11759428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9112220 is a wasteful number, since it uses less digits than its factorization.

9112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 9112220 is about 3018.6453915622. The cubic root of 9112220 is about 208.8693581575.

Adding to 9112220 its reverse (222119), we get a palindrome (9334339).

The spelling of 9112220 in words is "nine million, one hundred twelve thousand, two hundred twenty".