12023221332 has 12 divisors (see below), whose sum is σ = 28054183136. Its totient is φ = 4007740440.

The previous prime is 12023221313. The next prime is 12023221333. The reversal of 12023221332 is 23312232021.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 12023221299 and 12023221308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12023221333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500967544 + ... + 500967567.

Almost surely, 2^12023221332 is an apocalyptic number.

12023221332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12023221332 is an abundant number, since it is smaller than the sum of its proper divisors (16030961804).

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

12023221332 is a wasteful number, since it uses less digits than its factorization.

12023221332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001935118 (or 1001935116 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 12023221332 its reverse (23312232021), we get a palindrome (35335453353).

The spelling of 12023221332 in words is "twelve billion, twenty-three million, two hundred twenty-one thousand, three hundred thirty-two".