21130432024 has 32 divisors (see below), whose sum is σ = 42829506720. Its totient is φ = 9715412736.

The previous prime is 21130432021. The next prime is 21130432033. The reversal of 21130432024 is 42023403112.

It is a junction number, because it is equal to n+sod(n) for n = 21130431986 and 21130432004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21130432021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358917 + ... + 413620.

It is an arithmetic number, because the mean of its divisors is an integer number (1338422085).

Almost surely, 2^21130432024 is an apocalyptic number.

It is an amenable number.

21130432024 is an abundant number, since it is smaller than the sum of its proper divisors (21699074696).

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

21130432024 is a wasteful number, since it uses less digits than its factorization.

21130432024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772819 (or 772815 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21130432024 its reverse (42023403112), we get a palindrome (63153835136).

The spelling of 21130432024 in words is "twenty-one billion, one hundred thirty million, four hundred thirty-two thousand, twenty-four".