21124232332 has 24 divisors (see below), whose sum is σ = 44085355776. Its totient is φ = 8659622928.

The previous prime is 21124232299. The next prime is 21124232341. The reversal of 21124232332 is 23323242112.

It is a junction number, because it is equal to n+sod(n) for n = 21124232297 and 21124232306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16400158 + ... + 16401445.

It is an arithmetic number, because the mean of its divisors is an integer number (1836889824).

Almost surely, 2^21124232332 is an apocalyptic number.

It is an amenable number.

21124232332 is an abundant number, since it is smaller than the sum of its proper divisors (22961123444).

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

21124232332 is a wasteful number, since it uses less digits than its factorization.

21124232332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32801637 (or 32801635 counting only the distinct ones).

The product of its digits is 3456, while the sum is 25.

Adding to 21124232332 its reverse (23323242112), we get a palindrome (44447474444).

The spelling of 21124232332 in words is "twenty-one billion, one hundred twenty-four million, two hundred thirty-two thousand, three hundred thirty-two".