21130232132 has 12 divisors (see below), whose sum is σ = 37011932160. Its totient is φ = 10555394376.

The previous prime is 21130232087. The next prime is 21130232141. The reversal of 21130232132 is 23123203112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2425532 + ... + 2434227.

It is an arithmetic number, because the mean of its divisors is an integer number (3084327680).

Almost surely, 2^21130232132 is an apocalyptic number.

It is an amenable number.

21130232132 is a deficient number, since it is larger than the sum of its proper divisors (15881700028).

21130232132 is a wasteful number, since it uses less digits than its factorization.

21130232132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4860850 (or 4860848 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21130232132 its reverse (23123203112), we get a palindrome (44253435244).

The spelling of 21130232132 in words is "twenty-one billion, one hundred thirty million, two hundred thirty-two thousand, one hundred thirty-two".