21101330333 has 16 divisors (see below), whose sum is σ = 21420624960. Its totient is φ = 20784988800.

The previous prime is 21101330329. The next prime is 21101330347. The reversal of 21101330333 is 33303310112.

It is a cyclic number.

It is not a de Polignac number, because 21101330333 - 2² = 21101330329 is a prime.

It is a super-2 number, since 2×21101330333² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101332333) 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 15 ways as a sum of consecutive naturals, for example, 19887623 + ... + 19888683.

It is an arithmetic number, because the mean of its divisors is an integer number (1338789060).

Almost surely, 2^21101330333 is an apocalyptic number.

It is an amenable number.

21101330333 is a deficient number, since it is larger than the sum of its proper divisors (319294627).

21101330333 is a wasteful number, since it uses less digits than its factorization.

21101330333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188.

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 21101330333 its reverse (33303310112), we get a palindrome (54404640445).

The spelling of 21101330333 in words is "twenty-one billion, one hundred one million, three hundred thirty thousand, three hundred thirty-three".