12020010121021 has 16 divisors (see below), whose sum is σ = 13765730609664. Its totient is φ = 10281444792624.

The previous prime is 12020010120967. The next prime is 12020010121033. The reversal of 12020010121021 is 12012101002021.

It is a cyclic number.

It is not a de Polignac number, because 12020010121021 - 2¹⁹ = 12020009596733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12020010120992 and 12020010121010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020010121051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12571746 + ... + 13494028.

It is an arithmetic number, because the mean of its divisors is an integer number (860358163104).

Almost surely, 2^{12020010121021} is an apocalyptic number.

It is an amenable number.

12020010121021 is a deficient number, since it is larger than the sum of its proper divisors (1745720488643).

12020010121021 is an equidigital number, since it uses as much as digits as its factorization.

12020010121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926160.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12020010121021 its reverse (12012101002021), we get a palindrome (24032111123042).

The spelling of 12020010121021 in words is "twelve trillion, twenty billion, ten million, one hundred twenty-one thousand, twenty-one".