12102116505 has 16 divisors (see below), whose sum is σ = 19988012544. Its totient is φ = 6246253440.

The previous prime is 12102116501. The next prime is 12102116549. The reversal of 12102116505 is 50561120121.

12102116505 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 12102116505 - 2² = 12102116501 is a prime.

It is a super-2 number, since 2×12102116505² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12102116501) 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, 13012564 + ... + 13013493.

It is an arithmetic number, because the mean of its divisors is an integer number (1249250784).

Almost surely, 2^12102116505 is an apocalyptic number.

12102116505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12102116505 is a deficient number, since it is larger than the sum of its proper divisors (7885896039).

12102116505 is a wasteful number, since it uses less digits than its factorization.

12102116505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26026096.

The product of its (nonzero) digits is 600, while the sum is 24.

Adding to 12102116505 its reverse (50561120121), we get a palindrome (62663236626).

The spelling of 12102116505 in words is "twelve billion, one hundred two million, one hundred sixteen thousand, five hundred five".