12020331130121 has 4 divisors (see below), whose sum is σ = 12020350589700. Its totient is φ = 12020311670544.

The previous prime is 12020331130111. The next prime is 12020331130139. The reversal of 12020331130121 is 12103113302021.

It is a happy number.

12020331130121 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 9348544736521 + 2671786393600 = 3057539^2 + 1634560^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12020331130121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12020331130093 and 12020331130102.

It is not an unprimeable number, because it can be changed into a prime (12020331130111) 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, 8771786 + ... + 10049123.

It is an arithmetic number, because the mean of its divisors is an integer number (3005087647425).

Almost surely, 2^{12020331130121} is an apocalyptic number.

It is an amenable number.

12020331130121 is a deficient number, since it is larger than the sum of its proper divisors (19459579).

12020331130121 is an equidigital number, since it uses as much as digits as its factorization.

12020331130121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19459578.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 12020331130121 its reverse (12103113302021), we get a palindrome (24123444432142).

The spelling of 12020331130121 in words is "twelve trillion, twenty billion, three hundred thirty-one million, one hundred thirty thousand, one hundred twenty-one".