13310421333421 has 2 divisors, whose sum is σ = 13310421333422. Its totient is φ = 13310421333420.

The previous prime is 13310421333337. The next prime is 13310421333479. The reversal of 13310421333421 is 12433312401331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12822945075396 + 487476258025 = 3580914^2 + 698195^2 .

It is an emirp because it is prime and its reverse (12433312401331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13310421333421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13310421339421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6655210666710 + 6655210666711.

It is an arithmetic number, because the mean of its divisors is an integer number (6655210666711).

Almost surely, 2^{13310421333421} is an apocalyptic number.

It is an amenable number.

13310421333421 is a deficient number, since it is larger than the sum of its proper divisors (1).

13310421333421 is an equidigital number, since it uses as much as digits as its factorization.

13310421333421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 13310421333421 its reverse (12433312401331), we get a palindrome (25743733734752).

The spelling of 13310421333421 in words is "thirteen trillion, three hundred ten billion, four hundred twenty-one million, three hundred thirty-three thousand, four hundred twenty-one".