21232322232 has 64 divisors (see below), whose sum is σ = 58721967360. Its totient is φ = 6343411200.

The previous prime is 21232322207. The next prime is 21232322249. The reversal of 21232322232 is 23222323212.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

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, 547633 + ... + 585120.

It is an arithmetic number, because the mean of its divisors is an integer number (917530740).

Almost surely, 2^21232322232 is an apocalyptic number.

21232322232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21232322232 is an abundant number, since it is smaller than the sum of its proper divisors (37489645128).

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

21232322232 is a wasteful number, since it uses less digits than its factorization.

21232322232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132844 (or 1132840 counting only the distinct ones).

The product of its digits is 3456, while the sum is 24.

Adding to 21232322232 its reverse (23222323212), we get a palindrome (44454645444).

The spelling of 21232322232 in words is "twenty-one billion, two hundred thirty-two million, three hundred twenty-two thousand, two hundred thirty-two".