12281020208 has 40 divisors (see below), whose sum is σ = 24113932800. Its totient is φ = 6058188864.

The previous prime is 12281020207. The next prime is 12281020231. The reversal of 12281020208 is 80202018221.

It is not an unprimeable number, because it can be changed into a prime (12281020207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2175053 + ... + 2180691.

It is an arithmetic number, because the mean of its divisors is an integer number (602848320).

Almost surely, 2^12281020208 is an apocalyptic number.

It is an amenable number.

12281020208 is a deficient number, since it is larger than the sum of its proper divisors (11832912592).

12281020208 is a wasteful number, since it uses less digits than its factorization.

12281020208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7449 (or 7443 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 26.

Adding to 12281020208 its reverse (80202018221), we get a palindrome (92483038429).

The spelling of 12281020208 in words is "twelve billion, two hundred eighty-one million, twenty thousand, two hundred eight".