1001021004304 has 80 divisors (see below), whose sum is σ = 2068307937280. Its totient is φ = 467993272320.

The previous prime is 1001021004271. The next prime is 1001021004307. The reversal of 1001021004304 is 4034001201001.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (1001021004307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7384174 + ... + 7518514.

It is an arithmetic number, because the mean of its divisors is an integer number (25853849216).

Almost surely, 2^{1001021004304} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1001021004304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1034153968640).

1001021004304 is an abundant number, since it is smaller than the sum of its proper divisors (1067286932976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1001021004304 is a wasteful number, since it uses less digits than its factorization.

1001021004304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134688 (or 134682 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1001021004304 its reverse (4034001201001), we get a palindrome (5035022205305).

The spelling of 1001021004304 in words is "one trillion, one billion, twenty-one million, four thousand, three hundred four".