13340423121421 has 8 divisors (see below), whose sum is σ = 14607289936800. Its totient is φ = 12082573152240.

The previous prime is 13340423121391. The next prime is 13340423121449. The reversal of 13340423121421 is 12412132404331.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13340423121421 - 2⁹ = 13340423120909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13340424121421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2254208451 + ... + 2254214368.

It is an arithmetic number, because the mean of its divisors is an integer number (1825911242100).

Almost surely, 2^{13340423121421} is an apocalyptic number.

13340423121421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13340423121421 is a deficient number, since it is larger than the sum of its proper divisors (1266866815379).

13340423121421 is a wasteful number, since it uses less digits than its factorization.

13340423121421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4508423099.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 13340423121421 its reverse (12412132404331), we get a palindrome (25752555525752).

The spelling of 13340423121421 in words is "thirteen trillion, three hundred forty billion, four hundred twenty-three million, one hundred twenty-one thousand, four hundred twenty-one".