12002012028 has 36 divisors (see below), whose sum is σ = 31462067000. Its totient is φ = 4000670352.

The previous prime is 12002012027. The next prime is 12002012039. The reversal of 12002012028 is 82021020021.

It is a happy number.

12002012028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 12002012028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002012027) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 6172903 + ... + 6174846.

Almost surely, 2^12002012028 is an apocalyptic number.

12002012028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12002012028 is an abundant number, since it is smaller than the sum of its proper divisors (19460054972).

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

12002012028 is a wasteful number, since it uses less digits than its factorization.

12002012028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12347768 (or 12347754 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12002012028 its reverse (82021020021), we get a palindrome (94023032049).

The spelling of 12002012028 in words is "twelve billion, two million, twelve thousand, twenty-eight".