12111102102 has 64 divisors (see below), whose sum is σ = 26748610560. Its totient is φ = 3625152000.

The previous prime is 12111102097. The next prime is 12111102139. The reversal of 12111102102 is 20120111121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3191118 + ... + 3194910.

It is an arithmetic number, because the mean of its divisors is an integer number (417947040).

Almost surely, 2^12111102102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12111102102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13374305280).

12111102102 is an abundant number, since it is smaller than the sum of its proper divisors (14637508458).

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

12111102102 is a wasteful number, since it uses less digits than its factorization.

12111102102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4389.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12111102102 its reverse (20120111121), we get a palindrome (32231213223).

The spelling of 12111102102 in words is "twelve billion, one hundred eleven million, one hundred two thousand, one hundred two".