13123340504421 has 8 divisors (see below), whose sum is σ = 19997471244864. Its totient is φ = 7499051716800.

The previous prime is 13123340504383. The next prime is 13123340504437. The reversal of 13123340504421 is 12440504332131.

13123340504421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13123340504421 - 2⁷ = 13123340504293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123340504821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312460488180 + ... + 312460488221.

It is an arithmetic number, because the mean of its divisors is an integer number (2499683905608).

Almost surely, 2^{13123340504421} is an apocalyptic number.

It is an amenable number.

13123340504421 is a deficient number, since it is larger than the sum of its proper divisors (6874130740443).

13123340504421 is an equidigital number, since it uses as much as digits as its factorization.

13123340504421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624920976411.

The product of its (nonzero) digits is 34560, while the sum is 33.

Adding to 13123340504421 its reverse (12440504332131), we get a palindrome (25563844836552).

The spelling of 13123340504421 in words is "thirteen trillion, one hundred twenty-three billion, three hundred forty million, five hundred four thousand, four hundred twenty-one".