12126444511 has 16 divisors (see below), whose sum is σ = 12674844000. Its totient is φ = 11587363200.

The previous prime is 12126444497. The next prime is 12126444521. The reversal of 12126444511 is 11544462121.

It is a cyclic number.

It is not a de Polignac number, because 12126444511 - 2¹¹ = 12126442463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12126444521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1102065 + ... + 1113013.

It is an arithmetic number, because the mean of its divisors is an integer number (792177750).

Almost surely, 2^12126444511 is an apocalyptic number.

12126444511 is a deficient number, since it is larger than the sum of its proper divisors (548399489).

12126444511 is a wasteful number, since it uses less digits than its factorization.

12126444511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11370.

The product of its digits is 7680, while the sum is 31.

The spelling of 12126444511 in words is "twelve billion, one hundred twenty-six million, four hundred forty-four thousand, five hundred eleven".