12102221121102 has 96 divisors (see below), whose sum is σ = 30599656880832. Its totient is φ = 3385516787712.

The previous prime is 12102221121013. The next prime is 12102221121121. The reversal of 12102221121102 is 20112112220121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 3541863 + ... + 6062114.

It is an arithmetic number, because the mean of its divisors is an integer number (318746425842).

Almost surely, 2^{12102221121102} is an apocalyptic number.

12102221121102 is an abundant number, since it is smaller than the sum of its proper divisors (18497435759730).

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

12102221121102 is a wasteful number, since it uses less digits than its factorization.

12102221121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9604202 (or 9604199 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12102221121102 its reverse (20112112220121), we get a palindrome (32214333341223).

The spelling of 12102221121102 in words is "twelve trillion, one hundred two billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred two".