12000122028 has 48 divisors (see below), whose sum is σ = 32464104960. Its totient is φ = 3826125072.

The previous prime is 12000122021. The next prime is 12000122039. The reversal of 12000122028 is 82022100021.

It is a happy number.

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 12000122028.

It is not an unprimeable number, because it can be changed into a prime (12000122021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2413000 + ... + 2417967.

It is an arithmetic number, because the mean of its divisors is an integer number (676335520).

Almost surely, 2^12000122028 is an apocalyptic number.

12000122028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12000122028 is an abundant number, since it is smaller than the sum of its proper divisors (20463982932).

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

12000122028 is a wasteful number, since it uses less digits than its factorization.

12000122028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4831003 (or 4830995 counting only the distinct ones).

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

Adding to 12000122028 its reverse (82022100021), we get a palindrome (94022222049).

The spelling of 12000122028 in words is "twelve billion, one hundred twenty-two thousand, twenty-eight".