21300442004 has 12 divisors (see below), whose sum is σ = 37277124864. Its totient is φ = 10649834904.

The previous prime is 21300441959. The next prime is 21300442039. The reversal of 21300442004 is 40024400312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53519 + ... + 213225.

It is an arithmetic number, because the mean of its divisors is an integer number (3106427072).

Almost surely, 2^21300442004 is an apocalyptic number.

It is an amenable number.

21300442004 is a deficient number, since it is larger than the sum of its proper divisors (15976682860).

21300442004 is a wasteful number, since it uses less digits than its factorization.

21300442004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193054 (or 193052 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 21300442004 its reverse (40024400312), we get a palindrome (61324842316).

The spelling of 21300442004 in words is "twenty-one billion, three hundred million, four hundred forty-two thousand, four".