21033323330 has 8 divisors (see below), whose sum is σ = 37859982012. Its totient is φ = 8413329328.

The previous prime is 21033323329. The next prime is 21033323371. The reversal of 21033323330 is 3332333012.

It can be written as a sum of positive squares in 2 ways, for example, as 18147592369 + 2885730961 = 134713^2 + 53719^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21033323296 and 21033323305.

It is an unprimeable number.

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, 1051666157 + ... + 1051666176.

Almost surely, 2^21033323330 is an apocalyptic number.

21033323330 is a deficient number, since it is larger than the sum of its proper divisors (16826658682).

21033323330 is a wasteful number, since it uses less digits than its factorization.

21033323330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2103332340.

The product of its (nonzero) digits is 2916, while the sum is 23.

Adding to 21033323330 its reverse (3332333012), we get a palindrome (24365656342).

The spelling of 21033323330 in words is "twenty-one billion, thirty-three million, three hundred twenty-three thousand, three hundred thirty".