21312333110 has 32 divisors (see below), whose sum is σ = 39163109472. Its totient is φ = 8348186880.

The previous prime is 21312333089. The next prime is 21312333139. The reversal of 21312333110 is 1133321312.

It is a congruent number.

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, 61514 + ... + 215426.

It is an arithmetic number, because the mean of its divisors is an integer number (1223847171).

Almost surely, 2^21312333110 is an apocalyptic number.

21312333110 is a deficient number, since it is larger than the sum of its proper divisors (17850776362).

21312333110 is a wasteful number, since it uses less digits than its factorization.

21312333110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154208.

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

Adding to 21312333110 its reverse (1133321312), we get a palindrome (22445654422).

The spelling of 21312333110 in words is "twenty-one billion, three hundred twelve million, three hundred thirty-three thousand, one hundred ten".