21230300132 has 6 divisors (see below), whose sum is σ = 37153025238. Its totient is φ = 10615150064.

The previous prime is 21230300129. The next prime is 21230300197. The reversal of 21230300132 is 23100303212.

It can be written as a sum of positive squares in only one way, i.e., 15553581796 + 5676718336 = 124714^2 + 75344^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21230300132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2653787513 + ... + 2653787520.

It is an arithmetic number, because the mean of its divisors is an integer number (6192170873).

Almost surely, 2^21230300132 is an apocalyptic number.

It is an amenable number.

21230300132 is a deficient number, since it is larger than the sum of its proper divisors (15922725106).

21230300132 is a wasteful number, since it uses less digits than its factorization.

21230300132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5307575037 (or 5307575035 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21230300132 its reverse (23100303212), we get a palindrome (44330603344).

The spelling of 21230300132 in words is "twenty-one billion, two hundred thirty million, three hundred thousand, one hundred thirty-two".