13440121104223 has 16 divisors (see below), whose sum is σ = 14685411767040. Its totient is φ = 12198749876800.

The previous prime is 13440121104199. The next prime is 13440121104227. The reversal of 13440121104223 is 32240112104431.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13440121104223 - 2⁹ = 13440121103711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13440121104191 and 13440121104200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13440121104227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29296908 + ... + 29752126.

It is an arithmetic number, because the mean of its divisors is an integer number (917838235440).

Almost surely, 2^{13440121104223} is an apocalyptic number.

13440121104223 is a deficient number, since it is larger than the sum of its proper divisors (1245290662817).

13440121104223 is a wasteful number, since it uses less digits than its factorization.

13440121104223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459518.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 13440121104223 its reverse (32240112104431), we get a palindrome (45680233208654).

The spelling of 13440121104223 in words is "thirteen trillion, four hundred forty billion, one hundred twenty-one million, one hundred four thousand, two hundred twenty-three".