11441545021 has 2 divisors, whose sum is σ = 11441545022. Its totient is φ = 11441545020.

The previous prime is 11441544997. The next prime is 11441545033. The reversal of 11441545021 is 12054514411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7812084996 + 3629460025 = 88386^2 + 60245^2 .

It is a cyclic number.

It is not a de Polignac number, because 11441545021 - 2³¹ = 9294061373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11441545051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5720772510 + 5720772511.

It is an arithmetic number, because the mean of its divisors is an integer number (5720772511).

Almost surely, 2^11441545021 is an apocalyptic number.

It is an amenable number.

11441545021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11441545021 is an equidigital number, since it uses as much as digits as its factorization.

11441545021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3200, while the sum is 28.

The spelling of 11441545021 in words is "eleven billion, four hundred forty-one million, five hundred forty-five thousand, twenty-one".