21330333032 has 16 divisors (see below), whose sum is σ = 41733260640. Its totient is φ = 10201463536.

The previous prime is 21330333001. The next prime is 21330333047. The reversal of 21330333032 is 23033303312.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 21330332989 and 21330333007.

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, 57962678 + ... + 57963045.

It is an arithmetic number, because the mean of its divisors is an integer number (2608328790).

Almost surely, 2^21330333032 is an apocalyptic number.

It is an amenable number.

21330333032 is a deficient number, since it is larger than the sum of its proper divisors (20402927608).

21330333032 is a wasteful number, since it uses less digits than its factorization.

21330333032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115925752 (or 115925748 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 23.

Adding to 21330333032 its reverse (23033303312), we get a palindrome (44363636344).

The spelling of 21330333032 in words is "twenty-one billion, three hundred thirty million, three hundred thirty-three thousand, thirty-two".