21344363333 has 4 divisors (see below), whose sum is σ = 21355724640. Its totient is φ = 21333002028.

The previous prime is 21344363321. The next prime is 21344363407. The reversal of 21344363333 is 33336344312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21344363333 - 2⁶ = 21344363269 is a prime.

It is a super-2 number, since 2×21344363333² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21344363293 and 21344363302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21344365333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5677835 + ... + 5681592.

It is an arithmetic number, because the mean of its divisors is an integer number (5338931160).

Almost surely, 2^21344363333 is an apocalyptic number.

It is an amenable number.

21344363333 is a deficient number, since it is larger than the sum of its proper divisors (11361307).

21344363333 is a wasteful number, since it uses less digits than its factorization.

21344363333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11361306.

The product of its digits is 139968, while the sum is 35.

The spelling of 21344363333 in words is "twenty-one billion, three hundred forty-four million, three hundred sixty-three thousand, three hundred thirty-three".