12006210505 has 4 divisors (see below), whose sum is σ = 14407452612. Its totient is φ = 9604968400.

The previous prime is 12006210499. The next prime is 12006210521. The reversal of 12006210505 is 50501260021.

12006210505 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, and also an emirpimes, since its reverse is a distinct semiprime: 50501260021 = 1117 ⋅45211513.

It can be written as a sum of positive squares in 2 ways, for example, as 2195109904 + 9811100601 = 46852^2 + 99051^2 .

It is not a de Polignac number, because 12006210505 - 2³ = 12006210497 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1200621046 + ... + 1200621055.

It is an arithmetic number, because the mean of its divisors is an integer number (3601863153).

Almost surely, 2^12006210505 is an apocalyptic number.

It is an amenable number.

12006210505 is a deficient number, since it is larger than the sum of its proper divisors (2401242107).

12006210505 is an equidigital number, since it uses as much as digits as its factorization.

12006210505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2401242106.

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 12006210505 its reverse (50501260021), we get a palindrome (62507470526).

The spelling of 12006210505 in words is "twelve billion, six million, two hundred ten thousand, five hundred five".