12102116506 has 4 divisors (see below), whose sum is σ = 18153174762. Its totient is φ = 6051058252.

The previous prime is 12102116501. The next prime is 12102116549. The reversal of 12102116506 is 60561120121.

It is a happy number.

12102116506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10309356225 + 1792760281 = 101535^2 + 42341^2 .

It is a super-2 number, since 2×12102116506² (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 as a sum of consecutive naturals, namely, 3025529125 + ... + 3025529128.

Almost surely, 2^12102116506 is an apocalyptic number.

12102116506 is a deficient number, since it is larger than the sum of its proper divisors (6051058256).

12102116506 is an equidigital number, since it uses as much as digits as its factorization.

12102116506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6051058255.

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 12102116506 its reverse (60561120121), we get a palindrome (72663236627).

The spelling of 12102116506 in words is "twelve billion, one hundred two million, one hundred sixteen thousand, five hundred six".