13134224112421 has 4 divisors (see below), whose sum is σ = 13269628484812. Its totient is φ = 12998819740032.

The previous prime is 13134224112391. The next prime is 13134224112437. The reversal of 13134224112421 is 12421142243131.

13134224112421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7960241532100 + 5173982580321 = 2821390^2 + 2274639^2 .

It is a cyclic number.

It is not a de Polignac number, because 13134224112421 - 2⁷ = 13134224112293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13134224112221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67702186050 + ... + 67702186243.

It is an arithmetic number, because the mean of its divisors is an integer number (3317407121203).

Almost surely, 2^{13134224112421} is an apocalyptic number.

It is an amenable number.

13134224112421 is a deficient number, since it is larger than the sum of its proper divisors (135404372391).

13134224112421 is an equidigital number, since it uses as much as digits as its factorization.

13134224112421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135404372390.

The product of its digits is 9216, while the sum is 31.

Adding to 13134224112421 its reverse (12421142243131), we get a palindrome (25555366355552).

The spelling of 13134224112421 in words is "thirteen trillion, one hundred thirty-four billion, two hundred twenty-four million, one hundred twelve thousand, four hundred twenty-one".