2244042221 has 2 divisors, whose sum is σ = 2244042222. Its totient is φ = 2244042220.

The previous prime is 2244042209. The next prime is 2244042233. The reversal of 2244042221 is 1222404422.

It is a balanced prime because it is at equal distance from previous prime (2244042209) and next prime (2244042233).

It can be written as a sum of positive squares in only one way, i.e., 1890075625 + 353966596 = 43475^2 + 18814^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2244042221 is a prime.

It is a super-2 number, since 2×2244042221² = 10071450979261225682, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2244062221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1122021110 + 1122021111.

It is an arithmetic number, because the mean of its divisors is an integer number (1122021111).

Almost surely, 2^2244042221 is an apocalyptic number.

It is an amenable number.

2244042221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2244042221 is an equidigital number, since it uses as much as digits as its factorization.

2244042221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 2244042221 is about 47371.3227702162. The cubic root of 2244042221 is about 1309.2130971326.

Adding to 2244042221 its reverse (1222404422), we get a palindrome (3466446643).

The spelling of 2244042221 in words is "two billion, two hundred forty-four million, forty-two thousand, two hundred twenty-one".