12221120108 has 6 divisors (see below), whose sum is σ = 21386960196. Its totient is φ = 6110560052.

The previous prime is 12221120101. The next prime is 12221120129. The reversal of 12221120108 is 80102112221.

It is a self number, because there is not a number n which added to its sum of digits gives 12221120108.

It is not an unprimeable number, because it can be changed into a prime (12221120101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1527640010 + ... + 1527640017.

It is an arithmetic number, because the mean of its divisors is an integer number (3564493366).

Almost surely, 2^12221120108 is an apocalyptic number.

It is an amenable number.

12221120108 is a deficient number, since it is larger than the sum of its proper divisors (9165840088).

12221120108 is a wasteful number, since it uses less digits than its factorization.

12221120108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3055280031 (or 3055280029 counting only the distinct ones).

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

Adding to 12221120108 its reverse (80102112221), we get a palindrome (92323232329).

The spelling of 12221120108 in words is "twelve billion, two hundred twenty-one million, one hundred twenty thousand, one hundred eight".