12012012111 has 8 divisors (see below), whose sum is σ = 17472017664. Its totient is φ = 7280007320.

The previous prime is 12012012083. The next prime is 12012012151. The reversal of 12012012111 is 11121021021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12012012111 - 2⁵ = 12012012079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012012151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182000151 + ... + 182000216.

It is an arithmetic number, because the mean of its divisors is an integer number (2184002208).

Almost surely, 2^12012012111 is an apocalyptic number.

12012012111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12012012111 is a deficient number, since it is larger than the sum of its proper divisors (5460005553).

12012012111 is a wasteful number, since it uses less digits than its factorization.

12012012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364000381.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12012012111 its reverse (11121021021), we get a palindrome (23133033132).

It can be divided in two parts, 120120 and 12111, that added together give a palindrome (132231).

The spelling of 12012012111 in words is "twelve billion, twelve million, twelve thousand, one hundred eleven".