12220220208 has 80 divisors (see below), whose sum is σ = 36409852160. Its totient is φ = 3459449088.

The previous prime is 12220220171. The next prime is 12220220269. The reversal of 12220220208 is 80202202221.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130210 + ... + 203457.

It is an arithmetic number, because the mean of its divisors is an integer number (455123152).

Almost surely, 2^12220220208 is an apocalyptic number.

It is an amenable number.

12220220208 is an abundant number, since it is smaller than the sum of its proper divisors (24189631952).

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

12220220208 is a wasteful number, since it uses less digits than its factorization.

12220220208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333794 (or 333788 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 12220220208 its reverse (80202202221), we get a palindrome (92422422429).

The spelling of 12220220208 in words is "twelve billion, two hundred twenty million, two hundred twenty thousand, two hundred eight".