12000111000 has 64 divisors (see below), whose sum is σ = 37440355680. Its totient is φ = 3200028800.

The previous prime is 12000110971. The next prime is 12000111037. The reversal of 12000111000 is 11100021.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

12000111000 is a modest number, since divided by 111000 gives 12000 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 12000111000.

It is a congruent number.

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, 1997019 + ... + 2003018.

Almost surely, 2^12000111000 is an apocalyptic number.

12000111000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12000111000 is an abundant number, since it is smaller than the sum of its proper divisors (25440244680).

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

12000111000 is a wasteful number, since it uses less digits than its factorization.

12000111000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4000061 (or 4000047 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 12000111000 its reverse (11100021), we get a palindrome (12011211021).

The spelling of 12000111000 in words is "twelve billion, one hundred eleven thousand".