12020020320 has 192 divisors, whose sum is σ = 47206043136. Its totient is φ = 2497658880.

The previous prime is 12020020303. The next prime is 12020020339. The reversal of 12020020320 is 2302002021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 12020020296 and 12020020305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125649 + ... + 199568.

It is an arithmetic number, because the mean of its divisors is an integer number (245864808).

Almost surely, 2^12020020320 is an apocalyptic number.

12020020320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12020020320 is an abundant number, since it is smaller than the sum of its proper divisors (35186022816).

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

12020020320 is a wasteful number, since it uses less digits than its factorization.

12020020320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325253 (or 325245 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 12020020320 its reverse (2302002021), we get a palindrome (14322022341).

The spelling of 12020020320 in words is "twelve billion, twenty million, twenty thousand, three hundred twenty".