12021020023201 has 48 divisors (see below), whose sum is σ = 15438619872000. Its totient is φ = 9337017590208.

The previous prime is 12021020023193. The next prime is 12021020023211. The reversal of 12021020023201 is 10232002012021.

It is a happy number.

It is not a de Polignac number, because 12021020023201 - 2³ = 12021020023193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12021020023211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 737445 + ... + 4958413.

It is an arithmetic number, because the mean of its divisors is an integer number (321637914000).

Almost surely, 2^{12021020023201} is an apocalyptic number.

It is an amenable number.

12021020023201 is a deficient number, since it is larger than the sum of its proper divisors (3417599848799).

12021020023201 is an equidigital number, since it uses as much as digits as its factorization.

12021020023201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4221051 (or 4221018 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12021020023201 its reverse (10232002012021), we get a palindrome (22253022035222).

The spelling of 12021020023201 in words is "twelve trillion, twenty-one billion, twenty million, twenty-three thousand, two hundred one".