21113333333303 has 6 divisors (see below), whose sum is σ = 21433161064896. Its totient is φ = 20798208950772.

The previous prime is 21113333333233. The next prime is 21113333333341. The reversal of 21113333333303 is 30333333331112.

It is not a de Polignac number, because 21113333333303 - 2⁸ = 21113333333047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21113333333303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113333339303) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2351669975 + ... + 2351678952.

It is an arithmetic number, because the mean of its divisors is an integer number (3572193510816).

Almost surely, 2^{21113333333303} is an apocalyptic number.

21113333333303 is a deficient number, since it is larger than the sum of its proper divisors (319827731593).

21113333333303 is an frugal number, since it uses more digits than its factorization.

21113333333303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4703349061 (or 4703348994 counting only the distinct ones).

The product of its (nonzero) digits is 39366, while the sum is 32.

Adding to 21113333333303 its reverse (30333333331112), we get a palindrome (51446666664415).

The spelling of 21113333333303 in words is "twenty-one trillion, one hundred thirteen billion, three hundred thirty-three million, three hundred thirty-three thousand, three hundred three".