12020323012121 has 4 divisors (see below), whose sum is σ = 12132662479632. Its totient is φ = 11907983544612.

The previous prime is 12020323012109. The next prime is 12020323012189. The reversal of 12020323012121 is 12121032302021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12020323012121 - 2⁶ = 12020323012057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12020323012093 and 12020323012102.

It is not an unprimeable number, because it can be changed into a prime (12020323012021) 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 3 ways as a sum of consecutive naturals, for example, 56169733595 + ... + 56169733808.

It is an arithmetic number, because the mean of its divisors is an integer number (3033165619908).

Almost surely, 2^{12020323012121} is an apocalyptic number.

It is an amenable number.

12020323012121 is a deficient number, since it is larger than the sum of its proper divisors (112339467511).

12020323012121 is a wasteful number, since it uses less digits than its factorization.

12020323012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112339467510.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12020323012121 its reverse (12121032302021), we get a palindrome (24141355314142).

The spelling of 12020323012121 in words is "twelve trillion, twenty billion, three hundred twenty-three million, twelve thousand, one hundred twenty-one".