12111120120 has 128 divisors (see below), whose sum is σ = 41359818240. Its totient is φ = 2808368640.

The previous prime is 12111120107. The next prime is 12111120121. The reversal of 12111120120 is 2102111121.

It is a super-2 number, since 2×12111120120² (a number of 21 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 12111120096 and 12111120105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111120121) 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, 169099 + ... + 229818.

It is an arithmetic number, because the mean of its divisors is an integer number (323123580).

Almost surely, 2^12111120120 is an apocalyptic number.

12111120120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111120120 is an abundant number, since it is smaller than the sum of its proper divisors (29248698120).

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

12111120120 is a wasteful number, since it uses less digits than its factorization.

12111120120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398965 (or 398961 counting only the distinct ones).

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

Adding to 12111120120 its reverse (2102111121), we get a palindrome (14213231241).

It can be divided in two parts, 12111 and 120120, that added together give a palindrome (132231).

The spelling of 12111120120 in words is "twelve billion, one hundred eleven million, one hundred twenty thousand, one hundred twenty".