21432422132 has 24 divisors (see below), whose sum is σ = 41142515232. Its totient is φ = 9688183200.

The previous prime is 21432422117. The next prime is 21432422153. The reversal of 21432422132 is 23122423412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1337618 + ... + 1353545.

It is an arithmetic number, because the mean of its divisors is an integer number (1714271468).

Almost surely, 2^21432422132 is an apocalyptic number.

21432422132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21432422132 is a deficient number, since it is larger than the sum of its proper divisors (19710093100).

21432422132 is a wasteful number, since it uses less digits than its factorization.

21432422132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2691359 (or 2691357 counting only the distinct ones).

The product of its digits is 4608, while the sum is 26.

Adding to 21432422132 its reverse (23122423412), we get a palindrome (44554845544).

The spelling of 21432422132 in words is "twenty-one billion, four hundred thirty-two million, four hundred twenty-two thousand, one hundred thirty-two".