13000203250421 has 2 divisors, whose sum is σ = 13000203250422. Its totient is φ = 13000203250420.

The previous prime is 13000203250351. The next prime is 13000203250429. The reversal of 13000203250421 is 12405230200031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10037808062500 + 2962395187921 = 3168250^2 + 1721161^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13000203250421 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13000203250429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6500101625210 + 6500101625211.

It is an arithmetic number, because the mean of its divisors is an integer number (6500101625211).

Almost surely, 2^{13000203250421} is an apocalyptic number.

It is an amenable number.

13000203250421 is a deficient number, since it is larger than the sum of its proper divisors (1).

13000203250421 is an equidigital number, since it uses as much as digits as its factorization.

13000203250421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 13000203250421 its reverse (12405230200031), we get a palindrome (25405433450452).

The spelling of 13000203250421 in words is "thirteen trillion, two hundred three million, two hundred fifty thousand, four hundred twenty-one".