21113240333 has 8 divisors (see below), whose sum is σ = 22045006656. Its totient is φ = 20182624000.

The previous prime is 21113240311. The next prime is 21113240411. The reversal of 21113240333 is 33304231112.

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 21113240333 - 2²⁰ = 21112191757 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21113240299 and 21113240308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113240633) 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, 249863 + ... + 323508.

It is an arithmetic number, because the mean of its divisors is an integer number (2755625832).

Almost surely, 2^21113240333 is an apocalyptic number.

21113240333 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21113240333 is a deficient number, since it is larger than the sum of its proper divisors (931766323).

21113240333 is a wasteful number, since it uses less digits than its factorization.

21113240333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574995.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21113240333 its reverse (33304231112), we get a palindrome (54417471445).

The spelling of 21113240333 in words is "twenty-one billion, one hundred thirteen million, two hundred forty thousand, three hundred thirty-three".