244404120221 has 4 divisors (see below), whose sum is σ = 244409269344. Its totient is φ = 244398971100.

The previous prime is 244404120199. The next prime is 244404120227. The reversal of 244404120221 is 122021404442.

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 244404120221 - 2¹⁴ = 244404103837 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 (244404120227) 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, 2502695 + ... + 2598516.

It is an arithmetic number, because the mean of its divisors is an integer number (61102317336).

Almost surely, 2^244404120221 is an apocalyptic number.

It is an amenable number.

244404120221 is a deficient number, since it is larger than the sum of its proper divisors (5149123).

244404120221 is an equidigital number, since it uses as much as digits as its factorization.

244404120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5149122.

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 244404120221 its reverse (122021404442), we get a palindrome (366425524663).

The spelling of 244404120221 in words is "two hundred forty-four billion, four hundred four million, one hundred twenty thousand, two hundred twenty-one".