12231320132 has 12 divisors (see below), whose sum is σ = 21410759916. Its totient is φ = 6113960160.

The previous prime is 12231320119. The next prime is 12231320137. The reversal of 12231320132 is 23102313221.

It can be written as a sum of positive squares in 2 ways, for example, as 4268356 + 12227051776 = 2066^2 + 110576^2 .

It is not an unprimeable number, because it can be changed into a prime (12231320137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408719 + ... + 437622.

It is an arithmetic number, because the mean of its divisors is an integer number (1784229993).

Almost surely, 2^12231320132 is an apocalyptic number.

It is an amenable number.

12231320132 is a deficient number, since it is larger than the sum of its proper divisors (9179439784).

12231320132 is a wasteful number, since it uses less digits than its factorization.

12231320132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849958 (or 849956 counting only the distinct ones).

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

Adding to 12231320132 its reverse (23102313221), we get a palindrome (35333633353).

The spelling of 12231320132 in words is "twelve billion, two hundred thirty-one million, three hundred twenty thousand, one hundred thirty-two".