21043112024 has 16 divisors (see below), whose sum is σ = 43042729320. Its totient is φ = 9565050880.

The previous prime is 21043112011. The next prime is 21043112039. The reversal of 21043112024 is 42021134012.

It is a super-2 number, since 2×21043112024² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21043111987 and 21043112005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119563049 + ... + 119563224.

Almost surely, 2^21043112024 is an apocalyptic number.

It is an amenable number.

21043112024 is an abundant number, since it is smaller than the sum of its proper divisors (21999617296).

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

21043112024 is a wasteful number, since it uses less digits than its factorization.

21043112024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239126290 (or 239126286 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21043112024 its reverse (42021134012), we get a palindrome (63064246036).

The spelling of 21043112024 in words is "twenty-one billion, forty-three million, one hundred twelve thousand, twenty-four".