21043112232 has 32 divisors (see below), whose sum is σ = 54304807680. Its totient is φ = 6788100480.

The previous prime is 21043112213. The next prime is 21043112267. The reversal of 21043112232 is 23221134012.

It is a junction number, because it is equal to n+sod(n) for n = 21043112199 and 21043112208.

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, 14141133 + ... + 14142620.

It is an arithmetic number, because the mean of its divisors is an integer number (1697025240).

Almost surely, 2^21043112232 is an apocalyptic number.

It is an amenable number.

21043112232 is an abundant number, since it is smaller than the sum of its proper divisors (33261695448).

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

21043112232 is a wasteful number, since it uses less digits than its factorization.

21043112232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28283793 (or 28283789 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21043112232 its reverse (23221134012), we get a palindrome (44264246244).

The spelling of 21043112232 in words is "twenty-one billion, forty-three million, one hundred twelve thousand, two hundred thirty-two".