21522432132 has 96 divisors (see below), whose sum is σ = 56117577600. Its totient is φ = 7133308416.

The previous prime is 21522432037. The next prime is 21522432133. The reversal of 21522432132 is 23123422512.

21522432132 is a `hidden beast` number, since 2 + 1 + 522 + 4 + 3 + 2 + 132 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 21522432096 and 21522432105.

It is not an unprimeable number, because it can be changed into a prime (21522432133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26603344 + ... + 26604152.

It is an arithmetic number, because the mean of its divisors is an integer number (584558100).

Almost surely, 2^21522432132 is an apocalyptic number.

It is an amenable number.

21522432132 is an abundant number, since it is smaller than the sum of its proper divisors (34595145468).

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

21522432132 is a wasteful number, since it uses less digits than its factorization.

21522432132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922 (or 1914 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

Adding to 21522432132 its reverse (23123422512), we get a palindrome (44645854644).

The spelling of 21522432132 in words is "twenty-one billion, five hundred twenty-two million, four hundred thirty-two thousand, one hundred thirty-two".