12210121208 has 16 divisors (see below), whose sum is σ = 24240682080. Its totient is φ = 5745939328.

The previous prime is 12210121199. The next prime is 12210121229. The reversal of 12210121208 is 80212101221.

It is a self number, because there is not a number n which added to its sum of digits gives 12210121208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44890016 + ... + 44890287.

It is an arithmetic number, because the mean of its divisors is an integer number (1515042630).

Almost surely, 2^12210121208 is an apocalyptic number.

It is an amenable number.

12210121208 is a deficient number, since it is larger than the sum of its proper divisors (12030560872).

12210121208 is a wasteful number, since it uses less digits than its factorization.

12210121208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89780326 (or 89780322 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12210121208 its reverse (80212101221), we get a palindrome (92422222429).

The spelling of 12210121208 in words is "twelve billion, two hundred ten million, one hundred twenty-one thousand, two hundred eight".