1044442421021 has 2 divisors, whose sum is σ = 1044442421022. Its totient is φ = 1044442421020.

The previous prime is 1044442420999. The next prime is 1044442421039. The reversal of 1044442421021 is 1201242444401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 725539389796 + 318903031225 = 851786^2 + 564715^2 .

It is a cyclic number.

It is not a de Polignac number, because 1044442421021 - 2¹⁴ = 1044442404637 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 (1044442421521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 522221210510 + 522221210511.

It is an arithmetic number, because the mean of its divisors is an integer number (522221210511).

Almost surely, 2^{1044442421021} is an apocalyptic number.

It is an amenable number.

1044442421021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1044442421021 is an equidigital number, since it uses as much as digits as its factorization.

1044442421021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8192, while the sum is 29.

Adding to 1044442421021 its reverse (1201242444401), we get a palindrome (2245684865422).

The spelling of 1044442421021 in words is "one trillion, forty-four billion, four hundred forty-two million, four hundred twenty-one thousand, twenty-one".