1320521002004 has 12 divisors (see below), whose sum is σ = 2360080089024. Its totient is φ = 646212405144.

The previous prime is 1320521002001. The next prime is 1320521002057. The reversal of 1320521002004 is 4002001250231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320521002001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3512023754 + ... + 3512024129.

It is an arithmetic number, because the mean of its divisors is an integer number (196673340752).

Almost surely, 2^{1320521002004} is an apocalyptic number.

It is an amenable number.

1320521002004 is a deficient number, since it is larger than the sum of its proper divisors (1039559087020).

1320521002004 is a wasteful number, since it uses less digits than its factorization.

1320521002004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7024047934 (or 7024047932 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 1320521002004 its reverse (4002001250231), we get a palindrome (5322522252235).

The spelling of 1320521002004 in words is "one trillion, three hundred twenty billion, five hundred twenty-one million, two thousand, four".