12021122012120 has 96 divisors (see below), whose sum is σ = 29303683567200. Its totient is φ = 4436213723136.

The previous prime is 12021122012111. The next prime is 12021122012171. The reversal of 12021122012120 is 2121022112021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12298949 + ... + 13240331.

It is an arithmetic number, because the mean of its divisors is an integer number (305246703825).

Almost surely, 2^{12021122012120} is an apocalyptic number.

12021122012120 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 12021122012120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14651841783600).

12021122012120 is an abundant number, since it is smaller than the sum of its proper divisors (17282561555080).

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

12021122012120 is a wasteful number, since it uses less digits than its factorization.

12021122012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943309 (or 943292 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12021122012120 its reverse (2121022112021), we get a palindrome (14142144124141).

Subtracting from 12021122012120 its reverse (2121022112021), we obtain a palindrome (9900099900099).

The spelling of 12021122012120 in words is "twelve trillion, twenty-one billion, one hundred twenty-two million, twelve thousand, one hundred twenty".