12020021300 has 72 divisors (see below), whose sum is σ = 31378616640. Its totient is φ = 3904243200.

The previous prime is 12020021263. The next prime is 12020021341. The reversal of 12020021300 is 312002021.

It is a happy number.

12020021300 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 438581 + ... + 465180.

It is an arithmetic number, because the mean of its divisors is an integer number (435814120).

Almost surely, 2^12020021300 is an apocalyptic number.

12020021300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12020021300 is an abundant number, since it is smaller than the sum of its proper divisors (19358595340).

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

12020021300 is a wasteful number, since it uses less digits than its factorization.

12020021300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903801 (or 903794 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 12020021300 its reverse (312002021), we get a palindrome (12332023321).

The spelling of 12020021300 in words is "twelve billion, twenty million, twenty-one thousand, three hundred".