21330111310 has 16 divisors (see below), whose sum is σ = 40652683056. Its totient is φ = 8030159488.

The previous prime is 21330111301. The next prime is 21330111329. The reversal of 21330111310 is 1311103312.

It is a super-2 number, since 2×21330111310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62735452 + ... + 62735791.

It is an arithmetic number, because the mean of its divisors is an integer number (2540792691).

Almost surely, 2^21330111310 is an apocalyptic number.

21330111310 is a deficient number, since it is larger than the sum of its proper divisors (19322571746).

21330111310 is a wasteful number, since it uses less digits than its factorization.

21330111310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125471267.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 21330111310 its reverse (1311103312), we get a palindrome (22641214622).

The spelling of 21330111310 in words is "twenty-one billion, three hundred thirty million, one hundred eleven thousand, three hundred ten".