12211210008 has 24 divisors (see below), whose sum is σ = 33072027300. Its totient is φ = 4070403312.

The previous prime is 12211209991. The next prime is 12211210009. The reversal of 12211210008 is 80001211221.

12211210008 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×12211210008² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211210009) 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 5 ways as a sum of consecutive naturals, for example, 84799998 + ... + 84800141.

Almost surely, 2^12211210008 is an apocalyptic number.

12211210008 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12211210008 is an abundant number, since it is smaller than the sum of its proper divisors (20860817292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12211210008 is a wasteful number, since it uses less digits than its factorization.

12211210008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169600151 (or 169600144 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12211210008 its reverse (80001211221), we get a palindrome (92212421229).

The spelling of 12211210008 in words is "twelve billion, two hundred eleven million, two hundred ten thousand, eight".