21132234441630 has 320 divisors, whose sum is σ = 64341273604608. Its totient is φ = 4937627185920.

The previous prime is 21132234441629. The next prime is 21132234441649. The reversal of 21132234441630 is 3614443223112.

21132234441630 is a `hidden beast` number, since 2 + 1 + 1 + 3 + 2 + 234 + 4 + 416 + 3 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 31393857 + ... + 32059923.

Almost surely, 2^{21132234441630} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21132234441630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32170636802304).

21132234441630 is an abundant number, since it is smaller than the sum of its proper divisors (43209039162978).

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

21132234441630 is a wasteful number, since it uses less digits than its factorization.

21132234441630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666253 (or 666244 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

Adding to 21132234441630 its reverse (3614443223112), we get a palindrome (24746677664742).

The spelling of 21132234441630 in words is "twenty-one trillion, one hundred thirty-two billion, two hundred thirty-four million, four hundred forty-one thousand, six hundred thirty".