13343223443021 has 4 divisors (see below), whose sum is σ = 13343236616700. Its totient is φ = 13343210269344.

The previous prime is 13343223442981. The next prime is 13343223443089. The reversal of 13343223443021 is 12034432234331.

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 6346595370025 + 6996628072996 = 2519245^2 + 2645114^2 .

It is a cyclic number.

It is not a de Polignac number, because 13343223443021 - 2⁴² = 8945176931917 is a prime.

It is a super-2 number, since 2×13343223443021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13343223443321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4928336 + ... + 7139673.

It is an arithmetic number, because the mean of its divisors is an integer number (3335809154175).

Almost surely, 2^{13343223443021} is an apocalyptic number.

It is an amenable number.

13343223443021 is a deficient number, since it is larger than the sum of its proper divisors (13173679).

13343223443021 is a wasteful number, since it uses less digits than its factorization.

13343223443021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13173678.

The product of its (nonzero) digits is 124416, while the sum is 35.

Adding to 13343223443021 its reverse (12034432234331), we get a palindrome (25377655677352).

The spelling of 13343223443021 in words is "thirteen trillion, three hundred forty-three billion, two hundred twenty-three million, four hundred forty-three thousand, twenty-one".