12102102222 has 48 divisors (see below), whose sum is σ = 29812153680. Its totient is φ = 3254345472.

The previous prime is 12102102157. The next prime is 12102102223. The reversal of 12102102222 is 22220120121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102102223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1205697 + ... + 1215692.

It is an arithmetic number, because the mean of its divisors is an integer number (621086535).

Almost surely, 2^12102102222 is an apocalyptic number.

12102102222 is an abundant number, since it is smaller than the sum of its proper divisors (17710051458).

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

12102102222 is a wasteful number, since it uses less digits than its factorization.

12102102222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2421425 (or 2421418 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12102102222 its reverse (22220120121), we get a palindrome (34322222343).

The spelling of 12102102222 in words is "twelve billion, one hundred two million, one hundred two thousand, two hundred twenty-two".