21132300441 has 64 divisors (see below), whose sum is σ = 35043737600. Its totient is φ = 11053972800.

The previous prime is 21132300439. The next prime is 21132300443. The reversal of 21132300441 is 14400323112.

It is an interprime number because it is at equal distance from previous prime (21132300439) and next prime (21132300443).

It is not a de Polignac number, because 21132300441 - 2¹ = 21132300439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21132300443) 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 63 ways as a sum of consecutive naturals, for example, 14483370 + ... + 14484828.

It is an arithmetic number, because the mean of its divisors is an integer number (547558400).

Almost surely, 2^21132300441 is an apocalyptic number.

21132300441 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21132300441 is a deficient number, since it is larger than the sum of its proper divisors (13911437159).

21132300441 is a wasteful number, since it uses less digits than its factorization.

21132300441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21132300441 its reverse (14400323112), we get a palindrome (35532623553).

The spelling of 21132300441 in words is "twenty-one billion, one hundred thirty-two million, three hundred thousand, four hundred forty-one".