21132133432 has 64 divisors (see below), whose sum is σ = 40462156800. Its totient is φ = 10345345920.

The previous prime is 21132133423. The next prime is 21132133471. The reversal of 21132133432 is 23433123112.

It is a junction number, because it is equal to n+sod(n) for n = 21132133397 and 21132133406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49030257 + ... + 49030687.

It is an arithmetic number, because the mean of its divisors is an integer number (632221200).

Almost surely, 2^21132133432 is an apocalyptic number.

It is an amenable number.

21132133432 is a deficient number, since it is larger than the sum of its proper divisors (19330023368).

21132133432 is a wasteful number, since it uses less digits than its factorization.

21132133432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076 (or 1072 counting only the distinct ones).

The product of its digits is 2592, while the sum is 25.

Adding to 21132133432 its reverse (23433123112), we get a palindrome (44565256544).

The spelling of 21132133432 in words is "twenty-one billion, one hundred thirty-two million, one hundred thirty-three thousand, four hundred thirty-two".