441227021 has 2 divisors, whose sum is σ = 441227022. Its totient is φ = 441227020.

The previous prime is 441227011. The next prime is 441227029. The reversal of 441227021 is 120722144.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 440538121 + 688900 = 20989^2 + 830^2 .

It is a cyclic number.

It is not a de Polignac number, because 441227021 - 2¹⁸ = 440964877 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 (441227029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220613510 + 220613511.

It is an arithmetic number, because the mean of its divisors is an integer number (220613511).

Almost surely, 2^441227021 is an apocalyptic number.

It is an amenable number.

441227021 is a deficient number, since it is larger than the sum of its proper divisors (1).

441227021 is an equidigital number, since it uses as much as digits as its factorization.

441227021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 441227021 is about 21005.4045664443. The cubic root of 441227021 is about 761.2968514893.

Adding to 441227021 its reverse (120722144), we get a palindrome (561949165).

The spelling of 441227021 in words is "four hundred forty-one million, two hundred twenty-seven thousand, twenty-one".