12011123231144 has 16 divisors (see below), whose sum is σ = 22526947770900. Its totient is φ = 6003937158912.

The previous prime is 12011123231057. The next prime is 12011123231167. The reversal of 12011123231144 is 44113232111021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11824231295044 + 186891936100 = 3438638^2 + 432310^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203025659 + ... + 203084810.

Almost surely, 2^{12011123231144} is an apocalyptic number.

It is an amenable number.

12011123231144 is a deficient number, since it is larger than the sum of its proper divisors (10515824539756).

12011123231144 is a wasteful number, since it uses less digits than its factorization.

12011123231144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406114172 (or 406114168 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 12011123231144 its reverse (44113232111021), we get a palindrome (56124355342165).

The spelling of 12011123231144 in words is "twelve trillion, eleven billion, one hundred twenty-three million, two hundred thirty-one thousand, one hundred forty-four".