21031021010333 has 8 divisors (see below), whose sum is σ = 21297705770880. Its totient is φ = 20764347982560.

The previous prime is 21031021010299. The next prime is 21031021010339. The reversal of 21031021010333 is 33301012013012.

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 21031021010333 - 2³⁶ = 20962301533597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21031021010339) 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, 702938 + ... + 6523508.

It is an arithmetic number, because the mean of its divisors is an integer number (2662213221360).

Almost surely, 2^{21031021010333} is an apocalyptic number.

It is an amenable number.

21031021010333 is a deficient number, since it is larger than the sum of its proper divisors (266684760547).

21031021010333 is an equidigital number, since it uses as much as digits as its factorization.

21031021010333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5866387.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 21031021010333 its reverse (33301012013012), we get a palindrome (54332033023345).

The spelling of 21031021010333 in words is "twenty-one trillion, thirty-one billion, twenty-one million, ten thousand, three hundred thirty-three".