13132242421 has 2 divisors, whose sum is σ = 13132242422. Its totient is φ = 13132242420.

The previous prime is 13132242401. The next prime is 13132242439. The reversal of 13132242421 is 12424223131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12094500625 + 1037741796 = 109975^2 + 32214^2 .

It is a cyclic number.

It is not a de Polignac number, because 13132242421 - 2¹⁵ = 13132209653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13132242401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6566121210 + 6566121211.

It is an arithmetic number, because the mean of its divisors is an integer number (6566121211).

Almost surely, 2^13132242421 is an apocalyptic number.

It is an amenable number.

13132242421 is a deficient number, since it is larger than the sum of its proper divisors (1).

13132242421 is an equidigital number, since it uses as much as digits as its factorization.

13132242421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 25.

Adding to 13132242421 its reverse (12424223131), we get a palindrome (25556465552).

The spelling of 13132242421 in words is "thirteen billion, one hundred thirty-two million, two hundred forty-two thousand, four hundred twenty-one".