12111021120 has 112 divisors (see below), whose sum is σ = 41948209728. Its totient is φ = 2936002560.

The previous prime is 12111021113. The next prime is 12111021137. The reversal of 12111021120 is 2112011121.

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 = 12111021096 and 12111021105.

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, 562879 + ... + 583998.

Almost surely, 2^12111021120 is an apocalyptic number.

12111021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111021120 is an abundant number, since it is smaller than the sum of its proper divisors (29837188608).

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

12111021120 is a wasteful number, since it uses less digits than its factorization.

12111021120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146908 (or 1146898 counting only the distinct ones).

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

Adding to 12111021120 its reverse (2112011121), we get a palindrome (14223032241).

Subtracting from 12111021120 its reverse (2112011121), we obtain a palindrome (9999009999).

The spelling of 12111021120 in words is "twelve billion, one hundred eleven million, twenty-one thousand, one hundred twenty".