12130220 has 24 divisors (see below), whose sum is σ = 25540704. Its totient is φ = 4839296.

The previous prime is 12130169. The next prime is 12130259. The reversal of 12130220 is 2203121.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11849 + ... + 12831.

It is an arithmetic number, because the mean of its divisors is an integer number (1064196).

Almost surely, 2^12130220 is an apocalyptic number.

12130220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12130220 is an abundant number, since it is smaller than the sum of its proper divisors (13410484).

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

12130220 is a wasteful number, since it uses less digits than its factorization.

12130220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1609 (or 1607 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 12130220 is about 3482.8465369580. The cubic root of 12130220 is about 229.7680080435.

Adding to 12130220 its reverse (2203121), we get a palindrome (14333341).

The spelling of 12130220 in words is "twelve million, one hundred thirty thousand, two hundred twenty".