12021330020 has 96 divisors (see below), whose sum is σ = 32156248320. Its totient is φ = 3674972160.

The previous prime is 12021330019. The next prime is 12021330031. The reversal of 12021330020 is 2003312021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 12021329977 and 12021330004.

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, 87701 + ... + 178140.

It is an arithmetic number, because the mean of its divisors is an integer number (334960920).

Almost surely, 2^12021330020 is an apocalyptic number.

12021330020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021330020 is an abundant number, since it is smaller than the sum of its proper divisors (20134918300).

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

12021330020 is a wasteful number, since it uses less digits than its factorization.

12021330020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265893 (or 265891 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 12021330020 its reverse (2003312021), we get a palindrome (14024642041).

The spelling of 12021330020 in words is "twelve billion, twenty-one million, three hundred thirty thousand, twenty".