12120210220 has 36 divisors (see below), whose sum is σ = 25838190000. Its totient is φ = 4775689248.

The previous prime is 12120210217. The next prime is 12120210241. The reversal of 12120210220 is 2201202121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12120210220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22281 + ... + 157279.

It is an arithmetic number, because the mean of its divisors is an integer number (717727500).

Almost surely, 2^12120210220 is an apocalyptic number.

12120210220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12120210220 is an abundant number, since it is smaller than the sum of its proper divisors (13717979780).

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

12120210220 is a wasteful number, since it uses less digits than its factorization.

12120210220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135142 (or 135073 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12120210220 its reverse (2201202121), we get a palindrome (14321412341).

The spelling of 12120210220 in words is "twelve billion, one hundred twenty million, two hundred ten thousand, two hundred twenty".