13242433321421 has 2 divisors, whose sum is σ = 13242433321422. Its totient is φ = 13242433321420.

The previous prime is 13242433321393. The next prime is 13242433321427. The reversal of 13242433321421 is 12412333424231.

It is a happy number.

13242433321421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8464689823396 + 4777743498025 = 2909414^2 + 2185805^2 .

It is a cyclic number.

It is not a de Polignac number, because 13242433321421 - 2¹⁰ = 13242433320397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13242433321427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6621216660710 + 6621216660711.

It is an arithmetic number, because the mean of its divisors is an integer number (6621216660711).

Almost surely, 2^{13242433321421} is an apocalyptic number.

It is an amenable number.

13242433321421 is a deficient number, since it is larger than the sum of its proper divisors (1).

13242433321421 is an equidigital number, since it uses as much as digits as its factorization.

13242433321421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 35.

Adding to 13242433321421 its reverse (12412333424231), we get a palindrome (25654766745652).

The spelling of 13242433321421 in words is "thirteen trillion, two hundred forty-two billion, four hundred thirty-three million, three hundred twenty-one thousand, four hundred twenty-one".