21000304113 has 8 divisors (see below), whose sum is σ = 28005190176. Its totient is φ = 13997810400.

The previous prime is 21000304069. The next prime is 21000304121. The reversal of 21000304113 is 31140300012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21000304113 - 2¹⁰ = 21000303089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21000304092 and 21000304101.

It is not an unprimeable number, because it can be changed into a prime (21000304163) 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, 577503 + ... + 612788.

It is an arithmetic number, because the mean of its divisors is an integer number (3500648772).

Almost surely, 2^21000304113 is an apocalyptic number.

It is an amenable number.

21000304113 is a deficient number, since it is larger than the sum of its proper divisors (7004886063).

21000304113 is a wasteful number, since it uses less digits than its factorization.

21000304113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196175.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21000304113 its reverse (31140300012), we get a palindrome (52140604125).

The spelling of 21000304113 in words is "twenty-one billion, three hundred four thousand, one hundred thirteen".