12122012105 has 16 divisors (see below), whose sum is σ = 16636143744. Its totient is φ = 8306401920.

The previous prime is 12122012081. The next prime is 12122012107. The reversal of 12122012105 is 50121022121.

12122012105 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 12122012105 - 2⁶ = 12122012041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12122012107) 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 15 ways as a sum of consecutive naturals, for example, 70691 + ... + 171000.

It is an arithmetic number, because the mean of its divisors is an integer number (1039758984).

Almost surely, 2^12122012105 is an apocalyptic number.

It is an amenable number.

12122012105 is a deficient number, since it is larger than the sum of its proper divisors (4514131639).

12122012105 is a wasteful number, since it uses less digits than its factorization.

12122012105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243136.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 12122012105 its reverse (50121022121), we get a palindrome (62243034226).

The spelling of 12122012105 in words is "twelve billion, one hundred twenty-two million, twelve thousand, one hundred five".