13444414121 has 4 divisors (see below), whose sum is σ = 13450063044. Its totient is φ = 13438765200.

The previous prime is 13444414097. The next prime is 13444414171. The reversal of 13444414121 is 12141444431.

It is a happy number.

13444414121 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 26666896 + 13417747225 = 5164^2 + 115835^2 .

It is a cyclic number.

It is not a de Polignac number, because 13444414121 - 2²⁶ = 13377305257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13444414171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2820890 + ... + 2825651.

It is an arithmetic number, because the mean of its divisors is an integer number (3362515761).

Almost surely, 2^13444414121 is an apocalyptic number.

It is an amenable number.

13444414121 is a deficient number, since it is larger than the sum of its proper divisors (5648923).

13444414121 is an equidigital number, since it uses as much as digits as its factorization.

13444414121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5648922.

The product of its digits is 6144, while the sum is 29.

Adding to 13444414121 its reverse (12141444431), we get a palindrome (25585858552).

The spelling of 13444414121 in words is "thirteen billion, four hundred forty-four million, four hundred fourteen thousand, one hundred twenty-one".