12021020202001 has 4 divisors (see below), whose sum is σ = 12021957234100. Its totient is φ = 12020083169904.

The previous prime is 12021020201999. The next prime is 12021020202043. The reversal of 12021020202001 is 10020202012021.

It is a happy number.

12021020202001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8802638021776 + 3218382180225 = 2966924^2 + 1793985^2 .

It is a cyclic number.

It is not a de Polignac number, because 12021020202001 - 2¹ = 12021020201999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12021020202091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468496806 + ... + 468522463.

It is an arithmetic number, because the mean of its divisors is an integer number (3005489308525).

Almost surely, 2^{12021020202001} is an apocalyptic number.

It is an amenable number.

12021020202001 is a deficient number, since it is larger than the sum of its proper divisors (937032099).

12021020202001 is an equidigital number, since it uses as much as digits as its factorization.

12021020202001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937032098.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12021020202001 its reverse (10020202012021), we get a palindrome (22041222214022).

The spelling of 12021020202001 in words is "twelve trillion, twenty-one billion, twenty million, two hundred two thousand, one".