21203120203333 has 8 divisors (see below), whose sum is σ = 22348116286200. Its totient is φ = 20085714387648.

The previous prime is 21203120203297. The next prime is 21203120203361. The reversal of 21203120203333 is 33330202130212.

It can be written as a sum of positive squares in 4 ways, for example, as 1194469754724 + 20008650448609 = 1092918^2 + 4473103^2 .

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 21203120203333 - 2²⁹ = 21202583332421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21203120203298 and 21203120203307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21203120203033) 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, 6897565218 + ... + 6897568291.

It is an arithmetic number, because the mean of its divisors is an integer number (2793514535775).

Almost surely, 2^{21203120203333} is an apocalyptic number.

It is an amenable number.

21203120203333 is a deficient number, since it is larger than the sum of its proper divisors (1144996082867).

21203120203333 is a wasteful number, since it uses less digits than its factorization.

21203120203333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13795133591.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 21203120203333 its reverse (33330202130212), we get a palindrome (54533322333545).

The spelling of 21203120203333 in words is "twenty-one trillion, two hundred three billion, one hundred twenty million, two hundred three thousand, three hundred thirty-three".