1004244311221 has 4 divisors (see below), whose sum is σ = 1019233032352. Its totient is φ = 989255590092.

The previous prime is 1004244311201. The next prime is 1004244311227. The reversal of 1004244311221 is 1221134424001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1004244311221 - 2¹⁹ = 1004243786933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004244311227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7494360465 + ... + 7494360598.

It is an arithmetic number, because the mean of its divisors is an integer number (254808258088).

Almost surely, 2^{1004244311221} is an apocalyptic number.

It is an amenable number.

1004244311221 is a deficient number, since it is larger than the sum of its proper divisors (14988721131).

1004244311221 is an equidigital number, since it uses as much as digits as its factorization.

1004244311221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14988721130.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 1004244311221 its reverse (1221134424001), we get a palindrome (2225378735222).

The spelling of 1004244311221 in words is "one trillion, four billion, two hundred forty-four million, three hundred eleven thousand, two hundred twenty-one".