2444104013221 has 4 divisors (see below), whose sum is σ = 2632112014252. Its totient is φ = 2256096012192.

The previous prime is 2444104013207. The next prime is 2444104013279. The reversal of 2444104013221 is 1223104014442.

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 177531609025 + 2266572404196 = 421345^2 + 1505514^2 .

It is a cyclic number.

It is not a de Polignac number, because 2444104013221 - 2⁷ = 2444104013093 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2444104013221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2444104010221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94004000496 + ... + 94004000521.

It is an arithmetic number, because the mean of its divisors is an integer number (658028003563).

Almost surely, 2^{2444104013221} is an apocalyptic number.

It is an amenable number.

2444104013221 is a deficient number, since it is larger than the sum of its proper divisors (188008001031).

2444104013221 is a wasteful number, since it uses less digits than its factorization.

2444104013221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188008001030.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 2444104013221 its reverse (1223104014442), we get a palindrome (3667208027663).

The spelling of 2444104013221 in words is "two trillion, four hundred forty-four billion, one hundred four million, thirteen thousand, two hundred twenty-one".