244250221 has 4 divisors (see below), whose sum is σ = 244566972. Its totient is φ = 243933472.

The previous prime is 244250213. The next prime is 244250233. The reversal of 244250221 is 122052442.

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 29041321 + 215208900 = 5389^2 + 14670^2 .

It is a cyclic number.

It is not a de Polignac number, because 244250221 - 2³ = 244250213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 244250192 and 244250201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244250521) 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, 157216 + ... + 158761.

It is an arithmetic number, because the mean of its divisors is an integer number (61141743).

Almost surely, 2^244250221 is an apocalyptic number.

It is an amenable number.

244250221 is a deficient number, since it is larger than the sum of its proper divisors (316751).

244250221 is an equidigital number, since it uses as much as digits as its factorization.

244250221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316750.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 244250221 is about 15628.5066785026. The cubic root of 244250221 is about 625.0935079293.

The spelling of 244250221 in words is "two hundred forty-four million, two hundred fifty thousand, two hundred twenty-one".