21330313330 has 32 divisors (see below), whose sum is σ = 40445516160. Its totient is φ = 8077029120.

The previous prime is 21330313283. The next prime is 21330313351. The reversal of 21330313330 is 3331303312.

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 15 ways as a sum of consecutive naturals, for example, 217347 + ... + 299833.

It is an arithmetic number, because the mean of its divisors is an integer number (1263922380).

Almost surely, 2^21330313330 is an apocalyptic number.

21330313330 is a deficient number, since it is larger than the sum of its proper divisors (19115202830).

21330313330 is a wasteful number, since it uses less digits than its factorization.

21330313330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83874.

The product of its (nonzero) digits is 1458, while the sum is 22.

Adding to 21330313330 its reverse (3331303312), we get a palindrome (24661616642).

The spelling of 21330313330 in words is "twenty-one billion, three hundred thirty million, three hundred thirteen thousand, three hundred thirty".