13133441032421 has 2 divisors, whose sum is σ = 13133441032422. Its totient is φ = 13133441032420.

The previous prime is 13133441032367. The next prime is 13133441032451. The reversal of 13133441032421 is 12423014433131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8469089428900 + 4664351603521 = 2910170^2 + 2159711^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13133441032421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13133441032451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6566720516210 + 6566720516211.

It is an arithmetic number, because the mean of its divisors is an integer number (6566720516211).

Almost surely, 2^{13133441032421} is an apocalyptic number.

It is an amenable number.

13133441032421 is a deficient number, since it is larger than the sum of its proper divisors (1).

13133441032421 is an equidigital number, since it uses as much as digits as its factorization.

13133441032421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 13133441032421 its reverse (12423014433131), we get a palindrome (25556455465552).

The spelling of 13133441032421 in words is "thirteen trillion, one hundred thirty-three billion, four hundred forty-one million, thirty-two thousand, four hundred twenty-one".