12012122020013 has 4 divisors (see below), whose sum is σ = 12012209239548. Its totient is φ = 12012034800480.

The previous prime is 12012122019991. The next prime is 12012122020039. The reversal of 12012122020013 is 31002022121021.

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 6943846873924 + 5068275146089 = 2635118^2 + 2251283^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12012122020013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12012122019973 and 12012122020000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012122040013) 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, 43402856 + ... + 43678737.

It is an arithmetic number, because the mean of its divisors is an integer number (3003052309887).

Almost surely, 2^{12012122020013} is an apocalyptic number.

It is an amenable number.

12012122020013 is a deficient number, since it is larger than the sum of its proper divisors (87219535).

12012122020013 is an equidigital number, since it uses as much as digits as its factorization.

12012122020013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87219534.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12012122020013 its reverse (31002022121021), we get a palindrome (43014144141034).

The spelling of 12012122020013 in words is "twelve trillion, twelve billion, one hundred twenty-two million, twenty thousand, thirteen".