12000120012218 has 16 divisors (see below), whose sum is σ = 19403079614856. Its totient is φ = 5533296824640.

The previous prime is 12000120012217. The next prime is 12000120012227. The reversal of 12000120012218 is 81221002100021.

It can be written as a sum of positive squares in 4 ways, for example, as 8734643326249 + 3265476685969 = 2955443^2 + 1807063^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12000120012218.

It is not an unprimeable number, because it can be changed into a prime (12000120012217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217476221 + ... + 217531392.

Almost surely, 2^{12000120012218} is an apocalyptic number.

12000120012218 is a deficient number, since it is larger than the sum of its proper divisors (7402959602638).

12000120012218 is a wasteful number, since it uses less digits than its factorization.

12000120012218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435008689.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12000120012218 its reverse (81221002100021), we get a palindrome (93221122112239).

The spelling of 12000120012218 in words is "twelve trillion, one hundred twenty million, twelve thousand, two hundred eighteen".