21233320110 has 96 divisors (see below), whose sum is σ = 60339831552. Its totient is φ = 5157227520.

The previous prime is 21233320109. The next prime is 21233320133. The reversal of 21233320110 is 1102333212.

21233320110 is a `hidden beast` number, since 2 + 1 + 233 + 320 + 110 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 47 ways as a sum of consecutive naturals, for example, 176409 + ... + 271268.

It is an arithmetic number, because the mean of its divisors is an integer number (628539912).

Almost surely, 2^21233320110 is an apocalyptic number.

21233320110 is an abundant number, since it is smaller than the sum of its proper divisors (39106511442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21233320110 is a wasteful number, since it uses less digits than its factorization.

21233320110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447738 (or 447735 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21233320110 its reverse (1102333212), we get a palindrome (22335653322).

It can be divided in two parts, 2123 and 3320110, that added together give a palindrome (3322233).

The spelling of 21233320110 in words is "twenty-one billion, two hundred thirty-three million, three hundred twenty thousand, one hundred ten".