21233113232 has 10 divisors (see below), whose sum is σ = 41139156918. Its totient is φ = 10616556608.

The previous prime is 21233113217. The next prime is 21233113267. The reversal of 21233113232 is 23231133212.

It can be written as a sum of positive squares in only one way, i.e., 16046808976 + 5186304256 = 126676^2 + 72016^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21233113198 and 21233113207.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663534773 + ... + 663534804.

Almost surely, 2^21233113232 is an apocalyptic number.

It is an amenable number.

21233113232 is a deficient number, since it is larger than the sum of its proper divisors (19906043686).

21233113232 is a wasteful number, since it uses less digits than its factorization.

21233113232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327069585 (or 1327069579 counting only the distinct ones).

The product of its digits is 1296, while the sum is 23.

Adding to 21233113232 its reverse (23231133212), we get a palindrome (44464246444).

The spelling of 21233113232 in words is "twenty-one billion, two hundred thirty-three million, one hundred thirteen thousand, two hundred thirty-two".