21230020200132 has 18 divisors (see below), whose sum is σ = 53664773283758. Its totient is φ = 7076673400032.

The previous prime is 21230020200131. The next prime is 21230020200133. The reversal of 21230020200132 is 23100202003212.

21230020200132 is a `hidden beast` number, since 2 + 12 + 300 + 20 + 200 + 132 = 666.

It is an interprime number because it is at equal distance from previous prime (21230020200131) and next prime (21230020200133).

It can be written as a sum of positive squares in only one way, i.e., 11610742762116 + 9619277438016 = 3407454^2 + 3101496^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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

It is not an unprimeable number, because it can be changed into a prime (21230020200131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 294861391633 + ... + 294861391704.

Almost surely, 2^{21230020200132} is an apocalyptic number.

It is an amenable number.

21230020200132 is an abundant number, since it is smaller than the sum of its proper divisors (32434753083626).

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

21230020200132 is a wasteful number, since it uses less digits than its factorization.

21230020200132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589722783347 (or 589722783342 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21230020200132 its reverse (23100202003212), we get a palindrome (44330222203344).

The spelling of 21230020200132 in words is "twenty-one trillion, two hundred thirty billion, twenty million, two hundred thousand, one hundred thirty-two".