111102102012 has 96 divisors (see below), whose sum is σ = 286301433600. Its totient is φ = 33252736000.

The previous prime is 111102102011. The next prime is 111102102029. The reversal of 111102102012 is 210201201111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111102102011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5576164 + ... + 5596052.

It is an arithmetic number, because the mean of its divisors is an integer number (2982306600).

Almost surely, 2^111102102012 is an apocalyptic number.

111102102012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111102102012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143150716800).

111102102012 is an abundant number, since it is smaller than the sum of its proper divisors (175199331588).

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

111102102012 is a wasteful number, since it uses less digits than its factorization.

111102102012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20427 (or 20425 counting only the distinct ones).

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

Adding to 111102102012 its reverse (210201201111), we get a palindrome (321303303123).

Subtracting 111102102012 from its reverse (210201201111), we obtain a palindrome (99099099099).

The spelling of 111102102012 in words is "one hundred eleven billion, one hundred two million, one hundred two thousand, twelve".