21234200132 has 12 divisors (see below), whose sum is σ = 39345723900. Its totient is φ = 9992564736.

The previous prime is 21234200129. The next prime is 21234200153. The reversal of 21234200132 is 23100243212.

It can be written as a sum of positive squares in 2 ways, for example, as 11343102016 + 9891098116 = 106504^2 + 99454^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156133757 + ... + 156133892.

It is an arithmetic number, because the mean of its divisors is an integer number (3278810325).

Almost surely, 2^21234200132 is an apocalyptic number.

It is an amenable number.

21234200132 is a deficient number, since it is larger than the sum of its proper divisors (18111523768).

21234200132 is a wasteful number, since it uses less digits than its factorization.

21234200132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312267670 (or 312267668 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21234200132 its reverse (23100243212), we get a palindrome (44334443344).

The spelling of 21234200132 in words is "twenty-one billion, two hundred thirty-four million, two hundred thousand, one hundred thirty-two".