21230033232 has 80 divisors (see below), whose sum is σ = 55367884800. Its totient is φ = 7009301376.

The previous prime is 21230033221. The next prime is 21230033257. The reversal of 21230033232 is 23233003212.

It is a super-2 number, since 2×21230033232² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21230033199 and 21230033208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4161019 + ... + 4166117.

It is an arithmetic number, because the mean of its divisors is an integer number (692098560).

Almost surely, 2^21230033232 is an apocalyptic number.

It is an amenable number.

21230033232 is an abundant number, since it is smaller than the sum of its proper divisors (34137851568).

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

21230033232 is a wasteful number, since it uses less digits than its factorization.

21230033232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5920 (or 5914 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 21230033232 its reverse (23233003212), we get a palindrome (44463036444).

The spelling of 21230033232 in words is "twenty-one billion, two hundred thirty million, thirty-three thousand, two hundred thirty-two".