12111221102 has 8 divisors (see below), whose sum is σ = 18167845800. Its totient is φ = 6055272504.

The previous prime is 12111221099. The next prime is 12111221131. The reversal of 12111221102 is 20112211121.

12111221102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121577 + ... + 197492.

It is an arithmetic number, because the mean of its divisors is an integer number (2270980725).

Almost surely, 2^12111221102 is an apocalyptic number.

12111221102 is a deficient number, since it is larger than the sum of its proper divisors (6056624698).

12111221102 is a wasteful number, since it uses less digits than its factorization.

12111221102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338050.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12111221102 its reverse (20112211121), we get a palindrome (32223432223).

The spelling of 12111221102 in words is "twelve billion, one hundred eleven million, two hundred twenty-one thousand, one hundred two".