21330413330 has 8 divisors (see below), whose sum is σ = 38394744012. Its totient is φ = 8532165328.

The previous prime is 21330413261. The next prime is 21330413333. The reversal of 21330413330 is 3331403312.

It can be written as a sum of positive squares in 2 ways, for example, as 18864198409 + 2466214921 = 137347^2 + 49661^2 .

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 = 21330413296 and 21330413305.

It is not an unprimeable number, because it can be changed into a prime (21330413333) 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, 1066520657 + ... + 1066520676.

Almost surely, 2^21330413330 is an apocalyptic number.

21330413330 is a deficient number, since it is larger than the sum of its proper divisors (17064330682).

21330413330 is a wasteful number, since it uses less digits than its factorization.

21330413330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2133041340.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21330413330 its reverse (3331403312), we get a palindrome (24661816642).

The spelling of 21330413330 in words is "twenty-one billion, three hundred thirty million, four hundred thirteen thousand, three hundred thirty".