244213313221 has 16 divisors (see below), whose sum is σ = 260714937600. Its totient is φ = 227956481280.

The previous prime is 244213313209. The next prime is 244213313287. The reversal of 244213313221 is 122313312442.

It is a cyclic number.

It is not a de Polignac number, because 244213313221 - 2⁷ = 244213313093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 244213313221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244213313021) 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 15 ways as a sum of consecutive naturals, for example, 936055 + ... + 1168171.

It is an arithmetic number, because the mean of its divisors is an integer number (16294683600).

Almost surely, 2^244213313221 is an apocalyptic number.

It is an amenable number.

244213313221 is a deficient number, since it is larger than the sum of its proper divisors (16501624379).

244213313221 is a wasteful number, since it uses less digits than its factorization.

244213313221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232644.

The product of its digits is 6912, while the sum is 28.

Adding to 244213313221 its reverse (122313312442), we get a palindrome (366526625663).

The spelling of 244213313221 in words is "two hundred forty-four billion, two hundred thirteen million, three hundred thirteen thousand, two hundred twenty-one".