2044044123221 has 4 divisors (see below), whose sum is σ = 2045320854444. Its totient is φ = 2042767392000.

The previous prime is 2044044123211. The next prime is 2044044123241. The reversal of 2044044123221 is 1223214404402.

It is a happy number.

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 2041723774321 + 2320348900 = 1428889^2 + 48170^2 .

It is a cyclic number.

It is not a de Polignac number, because 2044044123221 - 2¹⁴ = 2044044106837 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 (2044044123211) 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, 638363210 + ... + 638366411.

It is an arithmetic number, because the mean of its divisors is an integer number (511330213611).

Almost surely, 2^{2044044123221} is an apocalyptic number.

It is an amenable number.

2044044123221 is a deficient number, since it is larger than the sum of its proper divisors (1276731223).

2044044123221 is a wasteful number, since it uses less digits than its factorization.

2044044123221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276731222.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 2044044123221 its reverse (1223214404402), we get a palindrome (3267258527623).

The spelling of 2044044123221 in words is "two trillion, forty-four billion, forty-four million, one hundred twenty-three thousand, two hundred twenty-one".