11003144021 has 2 divisors, whose sum is σ = 11003144022. Its totient is φ = 11003144020.

The previous prime is 11003144003. The next prime is 11003144059. The reversal of 11003144021 is 12044130011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10917951121 + 85192900 = 104489^2 + 9230^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11003144021 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 (11003144081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5501572010 + 5501572011.

It is an arithmetic number, because the mean of its divisors is an integer number (5501572011).

Almost surely, 2^11003144021 is an apocalyptic number.

It is an amenable number.

11003144021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11003144021 is an equidigital number, since it uses as much as digits as its factorization.

11003144021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 11003144021 its reverse (12044130011), we get a palindrome (23047274032).

The spelling of 11003144021 in words is "eleven billion, three million, one hundred forty-four thousand, twenty-one".