21233021332 has 24 divisors (see below), whose sum is σ = 39080143872. Its totient is φ = 10080189600.

The previous prime is 21233021323. The next prime is 21233021387. The reversal of 21233021332 is 23312033212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1608844 + ... + 1621987.

It is an arithmetic number, because the mean of its divisors is an integer number (1628339328).

Almost surely, 2^21233021332 is an apocalyptic number.

It is an amenable number.

21233021332 is a deficient number, since it is larger than the sum of its proper divisors (17847122540).

21233021332 is a wasteful number, since it uses less digits than its factorization.

21233021332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3230919 (or 3230917 counting only the distinct ones).

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

Adding to 21233021332 its reverse (23312033212), we get a palindrome (44545054544).

The spelling of 21233021332 in words is "twenty-one billion, two hundred thirty-three million, twenty-one thousand, three hundred thirty-two".