11444221013 has 2 divisors, whose sum is σ = 11444221014. Its totient is φ = 11444221012.

The previous prime is 11444221001. The next prime is 11444221073. The reversal of 11444221013 is 31012244411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6330111844 + 5114109169 = 79562^2 + 71513^2 .

It is a cyclic number.

It is not a de Polignac number, because 11444221013 - 2²² = 11440026709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11444221013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11444221073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5722110506 + 5722110507.

It is an arithmetic number, because the mean of its divisors is an integer number (5722110507).

Almost surely, 2^11444221013 is an apocalyptic number.

It is an amenable number.

11444221013 is a deficient number, since it is larger than the sum of its proper divisors (1).

11444221013 is an equidigital number, since it uses as much as digits as its factorization.

11444221013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 11444221013 its reverse (31012244411), we get a palindrome (42456465424).

The spelling of 11444221013 in words is "eleven billion, four hundred forty-four million, two hundred twenty-one thousand, thirteen".