2244360221 has 2 divisors, whose sum is σ = 2244360222. Its totient is φ = 2244360220.

The previous prime is 2244360211. The next prime is 2244360229. The reversal of 2244360221 is 1220634422.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1585154596 + 659205625 = 39814^2 + 25675^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2244360221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2244360229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1122180110 + 1122180111.

It is an arithmetic number, because the mean of its divisors is an integer number (1122180111).

Almost surely, 2^2244360221 is an apocalyptic number.

It is an amenable number.

2244360221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2244360221 is an equidigital number, since it uses as much as digits as its factorization.

2244360221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 2244360221 is about 47374.6791123697. The cubic root of 2244360221 is about 1309.2749364475.

Adding to 2244360221 its reverse (1220634422), we get a palindrome (3464994643).

The spelling of 2244360221 in words is "two billion, two hundred forty-four million, three hundred sixty thousand, two hundred twenty-one".