12331033220 has 48 divisors (see below), whose sum is σ = 28266815808. Its totient is φ = 4481228160.

The previous prime is 12331033213. The next prime is 12331033229. The reversal of 12331033220 is 2233013321.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12331033192 and 12331033201.

It is not an unprimeable number, because it can be changed into a prime (12331033229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 355907 + ... + 389013.

It is an arithmetic number, because the mean of its divisors is an integer number (588891996).

Almost surely, 2^12331033220 is an apocalyptic number.

12331033220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12331033220 is an abundant number, since it is smaller than the sum of its proper divisors (15935782588).

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

12331033220 is a wasteful number, since it uses less digits than its factorization.

12331033220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34820 (or 34818 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 12331033220 its reverse (2233013321), we get a palindrome (14564046541).

The spelling of 12331033220 in words is "twelve billion, three hundred thirty-one million, thirty-three thousand, two hundred twenty".