12021301332 has 144 divisors (see below), whose sum is σ = 31709583360. Its totient is φ = 3836802816.

The previous prime is 12021301301. The next prime is 12021301333. The reversal of 12021301332 is 23310312021.

12021301332 is a `hidden beast` number, since 1 + 202 + 130 + 1 + 332 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021301333) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30280158 + ... + 30280554.

It is an arithmetic number, because the mean of its divisors is an integer number (220205440).

Almost surely, 2^12021301332 is an apocalyptic number.

12021301332 is a gapful number since it is divisible by the number (12) 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 12021301332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15854791680).

12021301332 is an abundant number, since it is smaller than the sum of its proper divisors (19688282028).

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

12021301332 is a wasteful number, since it uses less digits than its factorization.

12021301332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750 (or 745 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12021301332 its reverse (23310312021), we get a palindrome (35331613353).

The spelling of 12021301332 in words is "twelve billion, twenty-one million, three hundred one thousand, three hundred thirty-two".