12021120 has 96 divisors (see below), whose sum is σ = 41530320. Its totient is φ = 3204096.

The previous prime is 12021071. The next prime is 12021131. The reversal of 12021120 is 2112021.

12021120 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a zygodrome in base 8.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4717 + ... + 6803.

Almost surely, 2^12021120 is an apocalyptic number.

12021120 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 12021120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20765160).

12021120 is an abundant number, since it is smaller than the sum of its proper divisors (29509200).

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

12021120 is a wasteful number, since it uses less digits than its factorization.

12021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112 (or 2097 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 12021120 is about 3467.1486844380. The cubic root of 12021120 is about 229.0770829284.

Adding to 12021120 its reverse (2112021), we get a palindrome (14133141).

Subtracting from 12021120 its reverse (2112021), we obtain a palindrome (9909099).

The spelling of 12021120 in words is "twelve million, twenty-one thousand, one hundred twenty".