12111213120 has 112 divisors (see below), whose sum is σ = 38600115840. Its totient is φ = 3217309696.

The previous prime is 12111213119. The next prime is 12111213137. The reversal of 12111213120 is 2131211121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12111213120.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228496 + ... + 276464.

Almost surely, 2^12111213120 is an apocalyptic number.

12111213120 is a gapful number since it is divisible by the number (10) 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 12111213120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19300057920).

12111213120 is an abundant number, since it is smaller than the sum of its proper divisors (26488902720).

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

12111213120 is a wasteful number, since it uses less digits than its factorization.

12111213120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48252 (or 48242 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 12111213120 its reverse (2131211121), we get a palindrome (14242424241).

The spelling of 12111213120 in words is "twelve billion, one hundred eleven million, two hundred thirteen thousand, one hundred twenty".