12021201020 has 12 divisors (see below), whose sum is σ = 25244522184. Its totient is φ = 4808480400.

The previous prime is 12021200977. The next prime is 12021201043. The reversal of 12021201020 is 2010212021.

It is a happy number.

12021201020 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 = 12021200992 and 12021201010.

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 3 ways as a sum of consecutive naturals, for example, 300530006 + ... + 300530045.

It is an arithmetic number, because the mean of its divisors is an integer number (2103710182).

Almost surely, 2^12021201020 is an apocalyptic number.

12021201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021201020 is an abundant number, since it is smaller than the sum of its proper divisors (13223321164).

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

12021201020 is a wasteful number, since it uses less digits than its factorization.

12021201020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601060060 (or 601060058 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12021201020 its reverse (2010212021), we get a palindrome (14031413041).

The spelling of 12021201020 in words is "twelve billion, twenty-one million, two hundred one thousand, twenty".