12012202118 has 24 divisors (see below), whose sum is σ = 21085605072. Its totient is φ = 5117252784.

The previous prime is 12012202117. The next prime is 12012202151. The reversal of 12012202118 is 81120221021.

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 12012202118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012202117) 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 11 ways as a sum of consecutive naturals, for example, 350621 + ... + 383352.

It is an arithmetic number, because the mean of its divisors is an integer number (878566878).

Almost surely, 2^12012202118 is an apocalyptic number.

12012202118 is a deficient number, since it is larger than the sum of its proper divisors (9073402954).

12012202118 is a wasteful number, since it uses less digits than its factorization.

12012202118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734156 (or 734149 counting only the distinct ones).

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

Adding to 12012202118 its reverse (81120221021), we get a palindrome (93132423139).

The spelling of 12012202118 in words is "twelve billion, twelve million, two hundred two thousand, one hundred eighteen".