21200132032 has 14 divisors (see below), whose sum is σ = 42069012128. Its totient is φ = 10600065984.

The previous prime is 21200132029. The next prime is 21200132053. The reversal of 21200132032 is 23023100212.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 21200131997 and 21200132015.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165625968 + ... + 165626095.

Almost surely, 2^21200132032 is an apocalyptic number.

It is an amenable number.

21200132032 is a deficient number, since it is larger than the sum of its proper divisors (20868880096).

21200132032 is an equidigital number, since it uses as much as digits as its factorization.

21200132032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331252075 (or 331252065 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21200132032 its reverse (23023100212), we get a palindrome (44223232244).

The spelling of 21200132032 in words is "twenty-one billion, two hundred million, one hundred thirty-two thousand, thirty-two".