2444013121 has 4 divisors (see below), whose sum is σ = 2666196144. Its totient is φ = 2221830100.

The previous prime is 2444013083. The next prime is 2444013139. The reversal of 2444013121 is 1213104442.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2444013121 - 2⁹ = 2444012609 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2444013092 and 2444013101.

It is not an unprimeable number, because it can be changed into a prime (2444013161) 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, 111091495 + ... + 111091516.

It is an arithmetic number, because the mean of its divisors is an integer number (666549036).

Almost surely, 2^2444013121 is an apocalyptic number.

It is an amenable number.

2444013121 is a deficient number, since it is larger than the sum of its proper divisors (222183023).

2444013121 is a wasteful number, since it uses less digits than its factorization.

2444013121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222183022.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 2444013121 is about 49436.9610817655. The cubic root of 2444013121 is about 1347.0007712332. Note that the first 3 decimals are identical.

Adding to 2444013121 its reverse (1213104442), we get a palindrome (3657117563).

The spelling of 2444013121 in words is "two billion, four hundred forty-four million, thirteen thousand, one hundred twenty-one".