12144400132 has 12 divisors (see below), whose sum is σ = 21254893660. Its totient is φ = 6071573376.

The previous prime is 12144400111. The next prime is 12144400139. The reversal of 12144400132 is 23100444121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11998135296 + 146264836 = 109536^2 + 12094^2 .

It is a super-2 number, since 2×12144400132² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12144400139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111633 + ... + 191704.

Almost surely, 2^12144400132 is an apocalyptic number.

It is an amenable number.

12144400132 is a deficient number, since it is larger than the sum of its proper divisors (9110493528).

12144400132 is a wasteful number, since it uses less digits than its factorization.

12144400132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313350 (or 313348 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 12144400132 its reverse (23100444121), we get a palindrome (35244844253).

The spelling of 12144400132 in words is "twelve billion, one hundred forty-four million, four hundred thousand, one hundred thirty-two".