11123012144 has 20 divisors (see below), whose sum is σ = 22818532824. Its totient is φ = 5234358528.

The previous prime is 11123012123. The next prime is 11123012179. The reversal of 11123012144 is 44121032111.

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, 20446442 + ... + 20446985.

Almost surely, 2^11123012144 is an apocalyptic number.

It is an amenable number.

11123012144 is an abundant number, since it is smaller than the sum of its proper divisors (11695520680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11123012144 is a wasteful number, since it uses less digits than its factorization.

11123012144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40893452 (or 40893446 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 11123012144 its reverse (44121032111), we get a palindrome (55244044255).

The spelling of 11123012144 in words is "eleven billion, one hundred twenty-three million, twelve thousand, one hundred forty-four".