11441140421 has 2 divisors, whose sum is σ = 11441140422. Its totient is φ = 11441140420.

The previous prime is 11441140387. The next prime is 11441140427. The reversal of 11441140421 is 12404114411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7994863396 + 3446277025 = 89414^2 + 58705^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11441140421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11441140427) 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, 5720570210 + 5720570211.

It is an arithmetic number, because the mean of its divisors is an integer number (5720570211).

Almost surely, 2^11441140421 is an apocalyptic number.

It is an amenable number.

11441140421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11441140421 is an equidigital number, since it uses as much as digits as its factorization.

11441140421 is an odious number, because the sum of its binary digits is odd.

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

Adding to 11441140421 its reverse (12404114411), we get a palindrome (23845254832).

The spelling of 11441140421 in words is "eleven billion, four hundred forty-one million, one hundred forty thousand, four hundred twenty-one".