21002341304 has 32 divisors (see below), whose sum is σ = 45638899200. Its totient is φ = 8874227040.

The previous prime is 21002341291. The next prime is 21002341309. The reversal of 21002341304 is 40314320012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002341309) 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 7 ways as a sum of consecutive naturals, for example, 2637164 + ... + 2645115.

It is an arithmetic number, because the mean of its divisors is an integer number (1426215600).

Almost surely, 2^21002341304 is an apocalyptic number.

It is an amenable number.

21002341304 is an abundant number, since it is smaller than the sum of its proper divisors (24636557896).

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

21002341304 is a wasteful number, since it uses less digits than its factorization.

21002341304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5282363 (or 5282359 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21002341304 its reverse (40314320012), we get a palindrome (61316661316).

The spelling of 21002341304 in words is "twenty-one billion, two million, three hundred forty-one thousand, three hundred four".