2001322032004 has 24 divisors (see below), whose sum is σ = 3708471778200. Its totient is φ = 941763104256.

The previous prime is 2001322032001. The next prime is 2001322032007. The reversal of 2001322032004 is 4002302231002.

It is an interprime number because it is at equal distance from previous prime (2001322032001) and next prime (2001322032007).

It can be written as a sum of positive squares in 4 ways, for example, as 747190817604 + 1254131214400 = 864402^2 + 1119880^2 .

It is not an unprimeable number, because it can be changed into a prime (2001322032001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1308322 + ... + 2390470.

It is an arithmetic number, because the mean of its divisors is an integer number (154519657425).

Almost surely, 2^{2001322032004} is an apocalyptic number.

It is an amenable number.

2001322032004 is a deficient number, since it is larger than the sum of its proper divisors (1707149746196).

2001322032004 is a wasteful number, since it uses less digits than its factorization.

2001322032004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109367 (or 1109365 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 2001322032004 its reverse (4002302231002), we get a palindrome (6003624263006).

The spelling of 2001322032004 in words is "two trillion, one billion, three hundred twenty-two million, thirty-two thousand, four".