21331112330 has 64 divisors (see below), whose sum is σ = 42356276352. Its totient is φ = 7670058240.

The previous prime is 21331112329. The next prime is 21331112339. The reversal of 21331112330 is 3321113312.

It is not an unprimeable number, because it can be changed into a prime (21331112339) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7966952 + ... + 7969628.

It is an arithmetic number, because the mean of its divisors is an integer number (661816818).

Almost surely, 2^21331112330 is an apocalyptic number.

21331112330 is a deficient number, since it is larger than the sum of its proper divisors (21025164022).

21331112330 is a wasteful number, since it uses less digits than its factorization.

21331112330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3479.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 21331112330 its reverse (3321113312), we get a palindrome (24652225642).

The spelling of 21331112330 in words is "twenty-one billion, three hundred thirty-one million, one hundred twelve thousand, three hundred thirty".