13121404134223 has 32 divisors (see below), whose sum is σ = 16410630684672. Its totient is φ = 10192305103200.

The previous prime is 13121404134199. The next prime is 13121404134277. The reversal of 13121404134223 is 32243140412131.

It is a happy number.

It is not a de Polignac number, because 13121404134223 - 2²¹ = 13121402037071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121404132223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 238097490 + ... + 238152592.

It is an arithmetic number, because the mean of its divisors is an integer number (512832208896).

Almost surely, 2^{13121404134223} is an apocalyptic number.

13121404134223 is a deficient number, since it is larger than the sum of its proper divisors (3289226550449).

13121404134223 is a wasteful number, since it uses less digits than its factorization.

13121404134223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64795.

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

Adding to 13121404134223 its reverse (32243140412131), we get a palindrome (45364544546354).

The spelling of 13121404134223 in words is "thirteen trillion, one hundred twenty-one billion, four hundred four million, one hundred thirty-four thousand, two hundred twenty-three".