21031010330333 has 8 divisors (see below), whose sum is σ = 21531808598520. Its totient is φ = 20535245210880.

The previous prime is 21031010330303. The next prime is 21031010330357. The reversal of 21031010330333 is 33303301013012.

It can be written as a sum of positive squares in 4 ways, for example, as 21373855204 + 21009636475129 = 146198^2 + 4583627^2 .

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 21031010330333 - 2²⁶ = 21030943221469 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21031010330299 and 21031010330308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21031010330303) 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, 1258278728 + ... + 1258295441.

It is an arithmetic number, because the mean of its divisors is an integer number (2691476074815).

Almost surely, 2^{21031010330333} is an apocalyptic number.

It is an amenable number.

21031010330333 is a deficient number, since it is larger than the sum of its proper divisors (500798268187).

21031010330333 is a wasteful number, since it uses less digits than its factorization.

21031010330333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2516574367.

The product of its (nonzero) digits is 1458, while the sum is 23.

Adding to 21031010330333 its reverse (33303301013012), we get a palindrome (54334311343345).

The spelling of 21031010330333 in words is "twenty-one trillion, thirty-one billion, ten million, three hundred thirty thousand, three hundred thirty-three".