13440221323 has 2 divisors, whose sum is σ = 13440221324. Its totient is φ = 13440221322.

The previous prime is 13440221321. The next prime is 13440221329. The reversal of 13440221323 is 32312204431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13440221323 - 2¹ = 13440221321 is a prime.

It is a super-2 number, since 2×13440221323² (a number of 21 digits) contains 22 as substring.

Together with 13440221321, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13440221321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6720110661 + 6720110662.

It is an arithmetic number, because the mean of its divisors is an integer number (6720110662).

Almost surely, 2^13440221323 is an apocalyptic number.

13440221323 is a deficient number, since it is larger than the sum of its proper divisors (1).

13440221323 is an equidigital number, since it uses as much as digits as its factorization.

13440221323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 13440221323 its reverse (32312204431), we get a palindrome (45752425754).

The spelling of 13440221323 in words is "thirteen billion, four hundred forty million, two hundred twenty-one thousand, three hundred twenty-three".