21243341333 has 8 divisors (see below), whose sum is σ = 21669285888. Its totient is φ = 20818327504.

The previous prime is 21243341309. The next prime is 21243341393. The reversal of 21243341333 is 33314334212.

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-21243341333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21243341296 and 21243341305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21243341393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186485 + ... + 277962.

It is an arithmetic number, because the mean of its divisors is an integer number (2708660736).

Almost surely, 2^21243341333 is an apocalyptic number.

It is an amenable number.

21243341333 is a deficient number, since it is larger than the sum of its proper divisors (425944555).

21243341333 is an equidigital number, since it uses as much as digits as its factorization.

21243341333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465363.

The product of its digits is 15552, while the sum is 29.

Adding to 21243341333 its reverse (33314334212), we get a palindrome (54557675545).

The spelling of 21243341333 in words is "twenty-one billion, two hundred forty-three million, three hundred forty-one thousand, three hundred thirty-three".