13000003120021 has 2 divisors, whose sum is σ = 13000003120022. Its totient is φ = 13000003120020.

The previous prime is 13000003120007. The next prime is 13000003120081. The reversal of 13000003120021 is 12002130000031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12957912084100 + 42091035921 = 3599710^2 + 205161^2 .

It is a cyclic number.

It is not a de Polignac number, because 13000003120021 - 2⁴³ = 4203910097813 is a prime.

It is a super-2 number, since 2×13000003120021² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13000003119983 and 13000003120010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13000003120081) 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 as a sum of consecutive naturals, namely, 6500001560010 + 6500001560011.

It is an arithmetic number, because the mean of its divisors is an integer number (6500001560011).

Almost surely, 2^{13000003120021} is an apocalyptic number.

It is an amenable number.

13000003120021 is a deficient number, since it is larger than the sum of its proper divisors (1).

13000003120021 is an equidigital number, since it uses as much as digits as its factorization.

13000003120021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 13000003120021 its reverse (12002130000031), we get a palindrome (25002133120052).

The spelling of 13000003120021 in words is "thirteen trillion, three million, one hundred twenty thousand, twenty-one".