11144444021 has 2 divisors, whose sum is σ = 11144444022. Its totient is φ = 11144444020.

The previous prime is 11144443967. The next prime is 11144444033. The reversal of 11144444021 is 12044444111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10710180100 + 434263921 = 103490^2 + 20839^2 .

It is a cyclic number.

It is not a de Polignac number, because 11144444021 - 2¹⁸ = 11144181877 is a prime.

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 (11144444321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5572222010 + 5572222011.

It is an arithmetic number, because the mean of its divisors is an integer number (5572222011).

Almost surely, 2^11144444021 is an apocalyptic number.

It is an amenable number.

11144444021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11144444021 is an equidigital number, since it uses as much as digits as its factorization.

11144444021 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 26.

Adding to 11144444021 its reverse (12044444111), we get a palindrome (23188888132).

The spelling of 11144444021 in words is "eleven billion, one hundred forty-four million, four hundred forty-four thousand, twenty-one".