21300132105 has 48 divisors (see below), whose sum is σ = 42990704640. Its totient is φ = 9553474944.

The previous prime is 21300132037. The next prime is 21300132107. The reversal of 21300132105 is 50123100312.

It is not a de Polignac number, because 21300132105 - 2⁷ = 21300131977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21300132107) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 621225 + ... + 654614.

It is an arithmetic number, because the mean of its divisors is an integer number (895639680).

Almost surely, 2^21300132105 is an apocalyptic number.

It is an amenable number.

21300132105 is an abundant number, since it is smaller than the sum of its proper divisors (21690572535).

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

21300132105 is a wasteful number, since it uses less digits than its factorization.

21300132105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275910 (or 1275907 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

Adding to 21300132105 its reverse (50123100312), we get a palindrome (71423232417).

The spelling of 21300132105 in words is "twenty-one billion, three hundred million, one hundred thirty-two thousand, one hundred five".