21303232110 has 96 divisors (see below), whose sum is σ = 57215751840. Its totient is φ = 5495226624.

The previous prime is 21303232103. The next prime is 21303232121. The reversal of 21303232110 is 1123230312.

21303232110 is a `hidden beast` number, since 2 + 130 + 323 + 211 + 0 = 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 (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 557601 + ... + 594579.

It is an arithmetic number, because the mean of its divisors is an integer number (595997415).

Almost surely, 2^21303232110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21303232110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28607875920).

21303232110 is an abundant number, since it is smaller than the sum of its proper divisors (35912519730).

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

21303232110 is a wasteful number, since it uses less digits than its factorization.

21303232110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37202 (or 37199 counting only the distinct ones).

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

Adding to 21303232110 its reverse (1123230312), we get a palindrome (22426462422).

The spelling of 21303232110 in words is "twenty-one billion, three hundred three million, two hundred thirty-two thousand, one hundred ten".