21120032300 has 18 divisors (see below), whose sum is σ = 45830470308. Its totient is φ = 8448012880.

The previous prime is 21120032281. The next prime is 21120032347. The reversal of 21120032300 is 323002112.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105600062 + ... + 105600261.

Almost surely, 2^21120032300 is an apocalyptic number.

21120032300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21120032300 is an abundant number, since it is smaller than the sum of its proper divisors (24710438008).

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

21120032300 is a wasteful number, since it uses less digits than its factorization.

21120032300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211200337 (or 211200330 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21120032300 its reverse (323002112), we get a palindrome (21443034412).

The spelling of 21120032300 in words is "twenty-one billion, one hundred twenty million, thirty-two thousand, three hundred".