12110220 has 72 divisors (see below), whose sum is σ = 38678640. Its totient is φ = 3058560.

The previous prime is 12110209. The next prime is 12110221. The reversal of 12110220 is 2201121.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (12110221) 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 23 ways as a sum of consecutive naturals, for example, 1650 + ... + 5190.

Almost surely, 2^12110220 is an apocalyptic number.

12110220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12110220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19339320).

12110220 is an abundant number, since it is smaller than the sum of its proper divisors (26568420).

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

12110220 is a wasteful number, since it uses less digits than its factorization.

12110220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3575 (or 3570 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 12110220 is about 3479.9741378349. The cubic root of 12110220 is about 229.6416600177.

Adding to 12110220 its reverse (2201121), we get a palindrome (14311341).

Subtracting from 12110220 its reverse (2201121), we obtain a palindrome (9909099).

The spelling of 12110220 in words is "twelve million, one hundred ten thousand, two hundred twenty".