13044440121 has 16 divisors (see below), whose sum is σ = 17977896960. Its totient is φ = 8404396560.

The previous prime is 13044440117. The next prime is 13044440147. The reversal of 13044440121 is 12104444031.

It is not a de Polignac number, because 13044440121 - 2² = 13044440117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13044440091 and 13044440100.

It is not an unprimeable number, because it can be changed into a prime (13044440111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25291 + ... + 163488.

It is an arithmetic number, because the mean of its divisors is an integer number (1123618560).

Almost surely, 2^13044440121 is an apocalyptic number.

It is an amenable number.

13044440121 is a deficient number, since it is larger than the sum of its proper divisors (4933456839).

13044440121 is a wasteful number, since it uses less digits than its factorization.

13044440121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189556.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 13044440121 its reverse (12104444031), we get a palindrome (25148884152).

The spelling of 13044440121 in words is "thirteen billion, forty-four million, four hundred forty thousand, one hundred twenty-one".