1004433240221 has 4 divisors (see below), whose sum is σ = 1008601013244. Its totient is φ = 1000265467200.

The previous prime is 1004433240203. The next prime is 1004433240229. The reversal of 1004433240221 is 1220423344001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 437516102500 + 566917137721 = 661450^2 + 752939^2 .

It is a cyclic number.

It is not a de Polignac number, because 1004433240221 - 2²⁶ = 1004366131357 is a prime.

It is a super-2 number, since 2×1004433240221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004433240229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2083886150 + ... + 2083886631.

It is an arithmetic number, because the mean of its divisors is an integer number (252150253311).

Almost surely, 2^{1004433240221} is an apocalyptic number.

It is an amenable number.

1004433240221 is a deficient number, since it is larger than the sum of its proper divisors (4167773023).

1004433240221 is an equidigital number, since it uses as much as digits as its factorization.

1004433240221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4167773022.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 1004433240221 its reverse (1220423344001), we get a palindrome (2224856584222).

The spelling of 1004433240221 in words is "one trillion, four billion, four hundred thirty-three million, two hundred forty thousand, two hundred twenty-one".