21200313132 has 36 divisors (see below), whose sum is σ = 55038053616. Its totient is φ = 6875776800.

The previous prime is 21200313109. The next prime is 21200313179. The reversal of 21200313132 is 23131300212.

21200313132 is a `hidden beast` number, since 21 + 200 + 313 + 132 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7956744 + ... + 7959407.

Almost surely, 2^21200313132 is an apocalyptic number.

It is an amenable number.

21200313132 is an abundant number, since it is smaller than the sum of its proper divisors (33837740484).

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

21200313132 is a wasteful number, since it uses less digits than its factorization.

21200313132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15916198 (or 15916193 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21200313132 its reverse (23131300212), we get a palindrome (44331613344).

The spelling of 21200313132 in words is "twenty-one billion, two hundred million, three hundred thirteen thousand, one hundred thirty-two".