12001222120 has 32 divisors (see below), whose sum is σ = 27013033800. Its totient is φ = 4798660608.

The previous prime is 12001222117. The next prime is 12001222147. The reversal of 12001222120 is 2122210021.

It is a happy number.

12001222120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4857253636 + 7143968484 = 69694^2 + 84522^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12001222120.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51772 + ... + 163348.

Almost surely, 2^12001222120 is an apocalyptic number.

12001222120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12001222120 is an abundant number, since it is smaller than the sum of its proper divisors (15011811680).

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

12001222120 is a wasteful number, since it uses less digits than its factorization.

12001222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114277 (or 114273 counting only the distinct ones).

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

Adding to 12001222120 its reverse (2122210021), we get a palindrome (14123432141).

The spelling of 12001222120 in words is "twelve billion, one million, two hundred twenty-two thousand, one hundred twenty".