12011112102 has 128 divisors (see below), whose sum is σ = 28382151168. Its totient is φ = 3348224000.

The previous prime is 12011112079. The next prime is 12011112163. The reversal of 12011112102 is 20121111021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9405088 + ... + 9406364.

It is an arithmetic number, because the mean of its divisors is an integer number (221735556).

Almost surely, 2^12011112102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12011112102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14191075584).

12011112102 is an abundant number, since it is smaller than the sum of its proper divisors (16371039066).

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

12011112102 is a wasteful number, since it uses less digits than its factorization.

12011112102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494.

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

Adding to 12011112102 its reverse (20121111021), we get a palindrome (32132223123).

The spelling of 12011112102 in words is "twelve billion, eleven million, one hundred twelve thousand, one hundred two".