12030021020 has 24 divisors (see below), whose sum is σ = 25266626784. Its totient is φ = 4811326016.

The previous prime is 12030021001. The next prime is 12030021061. The reversal of 12030021020 is 2012003021.

It is a happy number.

12030021020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12030020992 and 12030021010.

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 7 ways as a sum of consecutive naturals, for example, 116369 + ... + 193911.

It is an arithmetic number, because the mean of its divisors is an integer number (1052776116).

Almost surely, 2^12030021020 is an apocalyptic number.

12030021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12030021020 is an abundant number, since it is smaller than the sum of its proper divisors (13236605764).

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

12030021020 is a wasteful number, since it uses less digits than its factorization.

12030021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85309 (or 85307 counting only the distinct ones).

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

Adding to 12030021020 its reverse (2012003021), we get a palindrome (14042024041).

The spelling of 12030021020 in words is "twelve billion, thirty million, twenty-one thousand, twenty".