21332300032 has 18 divisors (see below), whose sum is σ = 42581271278. Its totient is φ = 10666149888.

The previous prime is 21332299999. The next prime is 21332300053. The reversal of 21332300032 is 23000323312.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 15431602176 + 5900697856 = 124224^2 + 76816^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21332299982 and 21332300009.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41664393 + ... + 41664904.

Almost surely, 2^21332300032 is an apocalyptic number.

It is an amenable number.

21332300032 is a deficient number, since it is larger than the sum of its proper divisors (21248971246).

21332300032 is an frugal number, since it uses more digits than its factorization.

21332300032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83329313 (or 83329299 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 21332300032 its reverse (23000323312), we get a palindrome (44332623344).

The spelling of 21332300032 in words is "twenty-one billion, three hundred thirty-two million, three hundred thousand, thirty-two".