21041432332 has 24 divisors (see below), whose sum is σ = 38855224800. Its totient is φ = 9950219136.

The previous prime is 21041432317. The next prime is 21041432341. The reversal of 21041432332 is 23323414012.

It is a junction number, because it is equal to n+sod(n) for n = 21041432297 and 21041432306.

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, 1276707 + ... + 1293082.

It is an arithmetic number, because the mean of its divisors is an integer number (1618967700).

Almost surely, 2^21041432332 is an apocalyptic number.

It is an amenable number.

21041432332 is a deficient number, since it is larger than the sum of its proper divisors (17813792468).

21041432332 is a wasteful number, since it uses less digits than its factorization.

21041432332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2569905 (or 2569903 counting only the distinct ones).

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

Adding to 21041432332 its reverse (23323414012), we get a palindrome (44364846344).

The spelling of 21041432332 in words is "twenty-one billion, forty-one million, four hundred thirty-two thousand, three hundred thirty-two".