12020323320 has 128 divisors (see below), whose sum is σ = 40920422400. Its totient is φ = 3137205888.

The previous prime is 12020323177. The next prime is 12020323321. The reversal of 12020323320 is 2332302021.

It is a happy number.

12020323320 is a `hidden beast` number, since 1 + 2 + 0 + 20 + 323 + 320 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 12020323293 and 12020323302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020323321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67644 + ... + 169163.

It is an arithmetic number, because the mean of its divisors is an integer number (319690800).

Almost surely, 2^12020323320 is an apocalyptic number.

12020323320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12020323320 is an abundant number, since it is smaller than the sum of its proper divisors (28900099080).

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

12020323320 is a wasteful number, since it uses less digits than its factorization.

12020323320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236874 (or 236864 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 12020323320 its reverse (2332302021), we get a palindrome (14352625341).

The spelling of 12020323320 in words is "twelve billion, twenty million, three hundred twenty-three thousand, three hundred twenty".