21023313332 has 24 divisors (see below), whose sum is σ = 42674192064. Its totient is φ = 8875513152.

The previous prime is 21023313319. The next prime is 21023313343. The reversal of 21023313332 is 23331332012.

It is a super-3 number, since 3×21023313332³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21023313298 and 21023313307.

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 7 ways as a sum of consecutive naturals, for example, 5601353 + ... + 5605104.

It is an arithmetic number, because the mean of its divisors is an integer number (1778091336).

Almost surely, 2^21023313332 is an apocalyptic number.

It is an amenable number.

21023313332 is an abundant number, since it is smaller than the sum of its proper divisors (21650878732).

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

21023313332 is a wasteful number, since it uses less digits than its factorization.

21023313332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11206535 (or 11206533 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21023313332 its reverse (23331332012), we get a palindrome (44354645344).

The spelling of 21023313332 in words is "twenty-one billion, twenty-three million, three hundred thirteen thousand, three hundred thirty-two".