12020311320 has 32 divisors (see below), whose sum is σ = 36060934320. Its totient is φ = 3205416320.

The previous prime is 12020311309. The next prime is 12020311321. The reversal of 12020311320 is 2311302021.

12020311320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12020311320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020311321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50084511 + ... + 50084750.

Almost surely, 2^12020311320 is an apocalyptic number.

12020311320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12020311320 is an abundant number, since it is smaller than the sum of its proper divisors (24040623000).

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

12020311320 is a wasteful number, since it uses less digits than its factorization.

12020311320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100169275 (or 100169271 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12020311320 its reverse (2311302021), we get a palindrome (14331613341).

The spelling of 12020311320 in words is "twelve billion, twenty million, three hundred eleven thousand, three hundred twenty".