12120000111 has 20 divisors (see below), whose sum is σ = 19170198432. Its totient is φ = 7604705088.

The previous prime is 12120000107. The next prime is 12120000161. The reversal of 12120000111 is 11100002121.

It is a happy number.

12120000111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12120000111 - 2² = 12120000107 is a prime.

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 = 12120000093 and 12120000102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120000161) 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 19 ways as a sum of consecutive naturals, for example, 4399495 + ... + 4402248.

Almost surely, 2^12120000111 is an apocalyptic number.

12120000111 is a deficient number, since it is larger than the sum of its proper divisors (7050198321).

12120000111 is an equidigital number, since it uses as much as digits as its factorization.

12120000111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8801772 (or 8801763 counting only the distinct ones).

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

Adding to 12120000111 its reverse (11100002121), we get a palindrome (23220002232).

The spelling of 12120000111 in words is "twelve billion, one hundred twenty million, one hundred eleven", and thus it is an aban number.