12323032220 has 24 divisors (see below), whose sum is σ = 26134593408. Its totient is φ = 4880408000.

The previous prime is 12323032219. The next prime is 12323032229. The reversal of 12323032220 is 2223032321.

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 = 12323032192 and 12323032201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12323032229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3048236 + ... + 3052275.

It is an arithmetic number, because the mean of its divisors is an integer number (1088941392).

Almost surely, 2^12323032220 is an apocalyptic number.

12323032220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12323032220 is an abundant number, since it is smaller than the sum of its proper divisors (13811561188).

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

12323032220 is a wasteful number, since it uses less digits than its factorization.

12323032220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6100621 (or 6100619 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 12323032220 its reverse (2223032321), we get a palindrome (14546064541).

The spelling of 12323032220 in words is "twelve billion, three hundred twenty-three million, thirty-two thousand, two hundred twenty".