12132232144 has 40 divisors (see below), whose sum is σ = 23623144520. Its totient is φ = 6036000768.

The previous prime is 12132232117. The next prime is 12132232169. The reversal of 12132232144 is 44123223121.

It can be written as a sum of positive squares in 4 ways, for example, as 2295559744 + 9836672400 = 47912^2 + 99180^2 .

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, 4470532 + ... + 4473244.

It is an arithmetic number, because the mean of its divisors is an integer number (590578613).

Almost surely, 2^12132232144 is an apocalyptic number.

It is an amenable number.

12132232144 is a deficient number, since it is larger than the sum of its proper divisors (11490912376).

12132232144 is a wasteful number, since it uses less digits than its factorization.

12132232144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4007 (or 4001 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

Adding to 12132232144 its reverse (44123223121), we get a palindrome (56255455265).

The spelling of 12132232144 in words is "twelve billion, one hundred thirty-two million, two hundred thirty-two thousand, one hundred forty-four".