12102012111 has 24 divisors (see below), whose sum is σ = 18775519104. Its totient is φ = 6913574640.

The previous prime is 12102012073. The next prime is 12102012113. The reversal of 12102012111 is 11121020121.

12102012111 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 12102012111 - 2¹⁰ = 12102011087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102012113) 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 23 ways as a sum of consecutive naturals, for example, 685566 + ... + 702996.

It is an arithmetic number, because the mean of its divisors is an integer number (782313296).

Almost surely, 2^12102012111 is an apocalyptic number.

12102012111 is a deficient number, since it is larger than the sum of its proper divisors (6673506993).

12102012111 is a wasteful number, since it uses less digits than its factorization.

12102012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22171 (or 22164 counting only the distinct ones).

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

Adding to 12102012111 its reverse (11121020121), we get a palindrome (23223032232).

It can be divided in two parts, 121020121 and 11, that multiplied together give a palindrome (1331221331).

The spelling of 12102012111 in words is "twelve billion, one hundred two million, twelve thousand, one hundred eleven".