21333301133 has 8 divisors (see below), whose sum is σ = 21376580280. Its totient is φ = 21290065920.

The previous prime is 21333301057. The next prime is 21333301151. The reversal of 21333301133 is 33110333312.

It can be written as a sum of positive squares in 4 ways, for example, as 4004738089 + 17328563044 = 63283^2 + 131638^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21333301133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21333301099 and 21333301108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21333301163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1065293 + ... + 1085133.

It is an arithmetic number, because the mean of its divisors is an integer number (2672072535).

Almost surely, 2^21333301133 is an apocalyptic number.

It is an amenable number.

21333301133 is a deficient number, since it is larger than the sum of its proper divisors (43279147).

21333301133 is a wasteful number, since it uses less digits than its factorization.

21333301133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21967.

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

Adding to 21333301133 its reverse (33110333312), we get a palindrome (54443634445).

The spelling of 21333301133 in words is "twenty-one billion, three hundred thirty-three million, three hundred one thousand, one hundred thirty-three".