21200321032 has 32 divisors (see below), whose sum is σ = 43406539200. Its totient is φ = 9627121600.

The previous prime is 21200320991. The next prime is 21200321063. The reversal of 21200321032 is 23012300212.

It is a super-2 number, since 2×21200321032² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21200320997 and 21200321015.

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 in 7 ways as a sum of consecutive naturals, for example, 26107 + ... + 207562.

It is an arithmetic number, because the mean of its divisors is an integer number (1356454350).

Almost surely, 2^21200321032 is an apocalyptic number.

21200321032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21200321032 is an abundant number, since it is smaller than the sum of its proper divisors (22206218168).

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

21200321032 is a wasteful number, since it uses less digits than its factorization.

21200321032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234717 (or 234713 counting only the distinct ones).

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

Adding to 21200321032 its reverse (23012300212), we get a palindrome (44212621244).

The spelling of 21200321032 in words is "twenty-one billion, two hundred million, three hundred twenty-one thousand, thirty-two".