13210233343421 has 4 divisors (see below), whose sum is σ = 13987305893052. Its totient is φ = 12433160793792.

The previous prime is 13210233343409. The next prime is 13210233343471. The reversal of 13210233343421 is 12434333201231.

13210233343421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7314374340100 + 5895859003321 = 2704510^2 + 2428139^2 .

It is a cyclic number.

It is not a de Polignac number, because 13210233343421 - 2⁶ = 13210233343357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13210233343471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388536274790 + ... + 388536274823.

It is an arithmetic number, because the mean of its divisors is an integer number (3496826473263).

Almost surely, 2^{13210233343421} is an apocalyptic number.

It is an amenable number.

13210233343421 is a deficient number, since it is larger than the sum of its proper divisors (777072549631).

13210233343421 is an equidigital number, since it uses as much as digits as its factorization.

13210233343421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777072549630.

The product of its (nonzero) digits is 31104, while the sum is 32.

Adding to 13210233343421 its reverse (12434333201231), we get a palindrome (25644566544652).

The spelling of 13210233343421 in words is "thirteen trillion, two hundred ten billion, two hundred thirty-three million, three hundred forty-three thousand, four hundred twenty-one".