21343555333 has 4 divisors (see below), whose sum is σ = 21455301888. Its totient is φ = 21231808780.

The previous prime is 21343555319. The next prime is 21343555349. The reversal of 21343555333 is 33355534312.

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 a de Polignac number, because none of the positive numbers 2^k-21343555333 is a prime.

It is a super-3 number, since 3×21343555333³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21343555292 and 21343555301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21343555313) 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 3 ways as a sum of consecutive naturals, for example, 55872991 + ... + 55873372.

It is an arithmetic number, because the mean of its divisors is an integer number (5363825472).

Almost surely, 2^21343555333 is an apocalyptic number.

It is an amenable number.

21343555333 is a deficient number, since it is larger than the sum of its proper divisors (111746555).

21343555333 is a wasteful number, since it uses less digits than its factorization.

21343555333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111746554.

The product of its digits is 243000, while the sum is 37.

The spelling of 21343555333 in words is "twenty-one billion, three hundred forty-three million, five hundred fifty-five thousand, three hundred thirty-three".