21300213132 has 144 divisors (see below), whose sum is σ = 62405834400. Its totient is φ = 6063482880.

The previous prime is 21300213127. The next prime is 21300213133. The reversal of 21300213132 is 23131200312.

21300213132 is a `hidden beast` number, since 21 + 300 + 213 + 132 = 666.

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 (21300213133) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 399844 + ... + 449972.

It is an arithmetic number, because the mean of its divisors is an integer number (433373850).

Almost surely, 2^21300213132 is an apocalyptic number.

21300213132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21300213132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31202917200).

21300213132 is an abundant number, since it is smaller than the sum of its proper divisors (41105621268).

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

21300213132 is a wasteful number, since it uses less digits than its factorization.

21300213132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50216 (or 50211 counting only the distinct ones).

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

Adding to 21300213132 its reverse (23131200312), we get a palindrome (44431413444).

It can be divided in two parts, 21300 and 213132, that added together give a palindrome (234432).

The spelling of 21300213132 in words is "twenty-one billion, three hundred million, two hundred thirteen thousand, one hundred thirty-two".