12111043120 has 40 divisors (see below), whose sum is σ = 30718011600. Its totient is φ = 4404015360.

The previous prime is 12111043111. The next prime is 12111043159. The reversal of 12111043120 is 2134011121.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 12111043094 and 12111043103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6880395 + ... + 6882154.

It is an arithmetic number, because the mean of its divisors is an integer number (767950290).

Almost surely, 2^12111043120 is an apocalyptic number.

12111043120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111043120 is an abundant number, since it is smaller than the sum of its proper divisors (18606968480).

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

12111043120 is a wasteful number, since it uses less digits than its factorization.

12111043120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13762573 (or 13762567 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12111043120 its reverse (2134011121), we get a palindrome (14245054241).

The spelling of 12111043120 in words is "twelve billion, one hundred eleven million, forty-three thousand, one hundred twenty".