21323312332 has 24 divisors (see below), whose sum is σ = 42918268064. Its totient is φ = 9080353152.

The previous prime is 21323312303. The next prime is 21323312333. The reversal of 21323312332 is 23321332312.

It is a junction number, because it is equal to n+sod(n) for n = 21323312297 and 21323312306.

It is not an unprimeable number, because it can be changed into a prime (21323312333) by changing a digit.

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, 2420913 + ... + 2429704.

Almost surely, 2^21323312332 is an apocalyptic number.

It is an amenable number.

21323312332 is an abundant number, since it is smaller than the sum of its proper divisors (21594955732).

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

21323312332 is a wasteful number, since it uses less digits than its factorization.

21323312332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4850785 (or 4850783 counting only the distinct ones).

The product of its digits is 3888, while the sum is 25.

Adding to 21323312332 its reverse (23321332312), we get a palindrome (44644644644).

The spelling of 21323312332 in words is "twenty-one billion, three hundred twenty-three million, three hundred twelve thousand, three hundred thirty-two".