12012120220 has 24 divisors (see below), whose sum is σ = 25529377104. Its totient is φ = 4746957696.

The previous prime is 12012120203. The next prime is 12012120229. The reversal of 12012120220 is 2202121021.

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 12012120220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012120229) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3616449 + ... + 3619768.

It is an arithmetic number, because the mean of its divisors is an integer number (1063724046).

Almost surely, 2^12012120220 is an apocalyptic number.

12012120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012120220 is an abundant number, since it is smaller than the sum of its proper divisors (13517256884).

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

12012120220 is a wasteful number, since it uses less digits than its factorization.

12012120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7236309 (or 7236307 counting only the distinct ones).

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

Adding to 12012120220 its reverse (2202121021), we get a palindrome (14214241241).

The spelling of 12012120220 in words is "twelve billion, twelve million, one hundred twenty thousand, two hundred twenty".