13442333321 has 4 divisors (see below), whose sum is σ = 13466467332. Its totient is φ = 13418199312.

The previous prime is 13442333297. The next prime is 13442333327. The reversal of 13442333321 is 12333324431.

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 1251744400 + 12190588921 = 35380^2 + 110411^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13442333321 is a prime.

It is a super-2 number, since 2×13442333321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13442333327) 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, 12066170 + ... + 12067283.

It is an arithmetic number, because the mean of its divisors is an integer number (3366616833).

Almost surely, 2^13442333321 is an apocalyptic number.

It is an amenable number.

13442333321 is a deficient number, since it is larger than the sum of its proper divisors (24134011).

13442333321 is an equidigital number, since it uses as much as digits as its factorization.

13442333321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24134010.

The product of its digits is 15552, while the sum is 29.

Adding to 13442333321 its reverse (12333324431), we get a palindrome (25775657752).

The spelling of 13442333321 in words is "thirteen billion, four hundred forty-two million, three hundred thirty-three thousand, three hundred twenty-one".