244200221 has 4 divisors (see below), whose sum is σ = 246440700. Its totient is φ = 241959744.

The previous prime is 244200199. The next prime is 244200227. The reversal of 244200221 is 122002442.

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 160934596 + 83265625 = 12686^2 + 9125^2 .

It is a cyclic number.

It is not a de Polignac number, because 244200221 - 2⁶ = 244200157 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 244200221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244200227) 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, 1120076 + ... + 1120293.

It is an arithmetic number, because the mean of its divisors is an integer number (61610175).

Almost surely, 2^244200221 is an apocalyptic number.

It is an amenable number.

244200221 is a deficient number, since it is larger than the sum of its proper divisors (2240479).

244200221 is a wasteful number, since it uses less digits than its factorization.

244200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2240478.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 244200221 is about 15626.9069556326. The cubic root of 244200221 is about 625.0508511159.

Adding to 244200221 its reverse (122002442), we get a palindrome (366202663).

The spelling of 244200221 in words is "two hundred forty-four million, two hundred thousand, two hundred twenty-one".