11444112221 has 2 divisors, whose sum is σ = 11444112222. Its totient is φ = 11444112220.

The previous prime is 11444112191. The next prime is 11444112233. The reversal of 11444112221 is 12221144411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6191486596 + 5252625625 = 78686^2 + 72475^2 .

It is a cyclic number.

It is not a de Polignac number, because 11444112221 - 2¹⁰ = 11444111197 is a prime.

It is a super-3 number, since 3×11444112221³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11444112721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5722056110 + 5722056111.

It is an arithmetic number, because the mean of its divisors is an integer number (5722056111).

Almost surely, 2^11444112221 is an apocalyptic number.

It is an amenable number.

11444112221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11444112221 is an equidigital number, since it uses as much as digits as its factorization.

11444112221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 512, while the sum is 23.

Adding to 11444112221 its reverse (12221144411), we get a palindrome (23665256632).

The spelling of 11444112221 in words is "eleven billion, four hundred forty-four million, one hundred twelve thousand, two hundred twenty-one".