21113323333 has 16 divisors (see below), whose sum is σ = 21412036800. Its totient is φ = 20817285120.

The previous prime is 21113323243. The next prime is 21113323339. The reversal of 21113323333 is 33332331112.

It is a cyclic number.

It is not a de Polignac number, because 21113323333 - 2²¹ = 21111226181 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21113323298 and 21113323307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113323339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22436643 + ... + 22437583.

It is an arithmetic number, because the mean of its divisors is an integer number (1338252300).

Almost surely, 2^21113323333 is an apocalyptic number.

It is an amenable number.

21113323333 is a deficient number, since it is larger than the sum of its proper divisors (298713467).

21113323333 is a wasteful number, since it uses less digits than its factorization.

21113323333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052.

The product of its digits is 2916, while the sum is 25.

Adding to 21113323333 its reverse (33332331112), we get a palindrome (54445654445).

The spelling of 21113323333 in words is "twenty-one billion, one hundred thirteen million, three hundred twenty-three thousand, three hundred thirty-three".