12126112672 has 12 divisors (see below), whose sum is σ = 23873284386. Its totient is φ = 6063056320.

The previous prime is 12126112639. The next prime is 12126112679. The reversal of 12126112672 is 27621162121.

It can be written as a sum of positive squares in only one way, i.e., 9825567376 + 2300545296 = 99124^2 + 47964^2 .

It is not an unprimeable number, because it can be changed into a prime (12126112679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189470479 + ... + 189470542.

Almost surely, 2^12126112672 is an apocalyptic number.

It is an amenable number.

12126112672 is a deficient number, since it is larger than the sum of its proper divisors (11747171714).

12126112672 is an equidigital number, since it uses as much as digits as its factorization.

12126112672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378941031 (or 378941023 counting only the distinct ones).

The product of its digits is 4032, while the sum is 31.

Adding to 12126112672 its reverse (27621162121), we get a palindrome (39747274793).

The spelling of 12126112672 in words is "twelve billion, one hundred twenty-six million, one hundred twelve thousand, six hundred seventy-two".