12111110010 has 128 divisors (see below), whose sum is σ = 32896281600. Its totient is φ = 3170119680.

The previous prime is 12111109897. The next prime is 12111110027. The reversal of 12111110010 is 1001111121.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 12111109974 and 12111110001.

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, 3859162 + ... + 3862298.

It is an arithmetic number, because the mean of its divisors is an integer number (257002200).

Almost surely, 2^12111110010 is an apocalyptic number.

12111110010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12111110010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16448140800).

12111110010 is an abundant number, since it is smaller than the sum of its proper divisors (20785171590).

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

12111110010 is a wasteful number, since it uses less digits than its factorization.

12111110010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3413 (or 3407 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 12111110010 its reverse (1001111121), we get a palindrome (13112221131).

The spelling of 12111110010 in words is "twelve billion, one hundred eleven million, one hundred ten thousand, ten".