21002032300 has 36 divisors (see below), whose sum is σ = 45619797160. Its totient is φ = 8392446720.

The previous prime is 21002032283. The next prime is 21002032327. The reversal of 21002032300 is 323020012.

It is a happy 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 in 11 ways as a sum of consecutive naturals, for example, 3174 + ... + 204973.

Almost surely, 2^21002032300 is an apocalyptic number.

21002032300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21002032300 is an abundant number, since it is smaller than the sum of its proper divisors (24617764860).

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

21002032300 is a wasteful number, since it uses less digits than its factorization.

21002032300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209170 (or 209163 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 21002032300 its reverse (323020012), we get a palindrome (21325052312).

The spelling of 21002032300 in words is "twenty-one billion, two million, thirty-two thousand, three hundred".