21113302013 has 8 divisors (see below), whose sum is σ = 21876650400. Its totient is φ = 20352307248.

The previous prime is 21113302009. The next prime is 21113302027. The reversal of 21113302013 is 31020331112.

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

It is a cyclic number.

It is not a de Polignac number, because 21113302013 - 2² = 21113302009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21113301982 and 21113302000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113302513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 570131 + ... + 606032.

It is an arithmetic number, because the mean of its divisors is an integer number (2734581300).

Almost surely, 2^21113302013 is an apocalyptic number.

It is an amenable number.

21113302013 is a deficient number, since it is larger than the sum of its proper divisors (763348387).

21113302013 is a wasteful number, since it uses less digits than its factorization.

21113302013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176811.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21113302013 its reverse (31020331112), we get a palindrome (52133633125).

The spelling of 21113302013 in words is "twenty-one billion, one hundred thirteen million, three hundred two thousand, thirteen".