21113423032 has 16 divisors (see below), whose sum is σ = 42632873640. Its totient is φ = 9744656736.

The previous prime is 21113423011. The next prime is 21113423033. The reversal of 21113423032 is 23032431112.

It is a junction number, because it is equal to n+sod(n) for n = 21113422994 and 21113423012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113423033) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 101506738 + ... + 101506945.

Almost surely, 2^21113423032 is an apocalyptic number.

It is an amenable number.

21113423032 is an abundant number, since it is smaller than the sum of its proper divisors (21519450608).

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

21113423032 is a wasteful number, since it uses less digits than its factorization.

21113423032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203013702 (or 203013698 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21113423032 its reverse (23032431112), we get a palindrome (44145854144).

The spelling of 21113423032 in words is "twenty-one billion, one hundred thirteen million, four hundred twenty-three thousand, thirty-two".