12021124232 has 128 divisors (see below), whose sum is σ = 25449016320. Its totient is φ = 5287680000.

The previous prime is 12021124189. The next prime is 12021124259. The reversal of 12021124232 is 23242112021.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44358257 + ... + 44358527.

It is an arithmetic number, because the mean of its divisors is an integer number (198820440).

Almost surely, 2^12021124232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12021124232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12724508160).

12021124232 is an abundant number, since it is smaller than the sum of its proper divisors (13427892088).

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

12021124232 is a wasteful number, since it uses less digits than its factorization.

12021124232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535 (or 531 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12021124232 its reverse (23242112021), we get a palindrome (35263236253).

The spelling of 12021124232 in words is "twelve billion, twenty-one million, one hundred twenty-four thousand, two hundred thirty-two".