21323120332 has 24 divisors (see below), whose sum is σ = 39520338480. Its totient is φ = 10031907840.

The previous prime is 21323120311. The next prime is 21323120339. The reversal of 21323120332 is 23302132312.

It is not an unprimeable number, because it can be changed into a prime (21323120339) 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, 251419 + ... + 325357.

It is an arithmetic number, because the mean of its divisors is an integer number (1646680770).

Almost surely, 2^21323120332 is an apocalyptic number.

It is an amenable number.

21323120332 is a deficient number, since it is larger than the sum of its proper divisors (18197218148).

21323120332 is a wasteful number, since it uses less digits than its factorization.

21323120332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78201 (or 78199 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21323120332 its reverse (23302132312), we get a palindrome (44625252644).

The spelling of 21323120332 in words is "twenty-one billion, three hundred twenty-three million, one hundred twenty thousand, three hundred thirty-two".