11244444221 has 2 divisors, whose sum is σ = 11244444222. Its totient is φ = 11244444220.

The previous prime is 11244444191. The next prime is 11244444241. The reversal of 11244444221 is 12244444211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11052316900 + 192127321 = 105130^2 + 13861^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11244444221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11244444241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5622222110 + 5622222111.

It is an arithmetic number, because the mean of its divisors is an integer number (5622222111).

Almost surely, 2^11244444221 is an apocalyptic number.

It is an amenable number.

11244444221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11244444221 is an equidigital number, since it uses as much as digits as its factorization.

11244444221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8192, while the sum is 29.

Adding to 11244444221 its reverse (12244444211), we get a palindrome (23488888432).

The spelling of 11244444221 in words is "eleven billion, two hundred forty-four million, four hundred forty-four thousand, two hundred twenty-one".