21022333232 has 10 divisors (see below), whose sum is σ = 40730770668. Its totient is φ = 10511166608.

The previous prime is 21022333223. The next prime is 21022333237. The reversal of 21022333232 is 23233322012.

It is a junction number, because it is equal to n+sod(n) for n = 21022333198 and 21022333207.

It is not an unprimeable number, because it can be changed into a prime (21022333237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656947898 + ... + 656947929.

Almost surely, 2^21022333232 is an apocalyptic number.

It is an amenable number.

21022333232 is a deficient number, since it is larger than the sum of its proper divisors (19708437436).

21022333232 is a wasteful number, since it uses less digits than its factorization.

21022333232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313895835 (or 1313895829 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 21022333232 its reverse (23233322012), we get a palindrome (44255655244).

The spelling of 21022333232 in words is "twenty-one billion, twenty-two million, three hundred thirty-three thousand, two hundred thirty-two".