12000111012 has 48 divisors (see below), whose sum is σ = 31460990400. Its totient is φ = 3955089600.

The previous prime is 12000110971. The next prime is 12000111037. The reversal of 12000111012 is 21011100021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 12000110985 and 12000111003.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 614614 + ... + 633837.

It is an arithmetic number, because the mean of its divisors is an integer number (655437300).

Almost surely, 2^12000111012 is an apocalyptic number.

12000111012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12000111012 is an abundant number, since it is smaller than the sum of its proper divisors (19460879388).

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

12000111012 is a wasteful number, since it uses less digits than its factorization.

12000111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248553 (or 1248545 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 12000111012 its reverse (21011100021), we get a palindrome (33011211033).

The spelling of 12000111012 in words is "twelve billion, one hundred eleven thousand, twelve".