12023012320 has 96 divisors (see below), whose sum is σ = 31223719296. Its totient is φ = 4338547200.

The previous prime is 12023012269. The next prime is 12023012329. The reversal of 12023012320 is 2321032021.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 12023012294 and 12023012303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12023012329) 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, 204487 + ... + 256633.

It is an arithmetic number, because the mean of its divisors is an integer number (325247076).

Almost surely, 2^12023012320 is an apocalyptic number.

12023012320 is a gapful number since it is divisible by the number (10) 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 12023012320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15611859648).

12023012320 is an abundant number, since it is smaller than the sum of its proper divisors (19200706976).

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

12023012320 is a wasteful number, since it uses less digits than its factorization.

12023012320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52304 (or 52296 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 12023012320 its reverse (2321032021), we get a palindrome (14344044341).

The spelling of 12023012320 in words is "twelve billion, twenty-three million, twelve thousand, three hundred twenty".