2011120144 has 20 divisors (see below), whose sum is σ = 4250777040. Its totient is φ = 914145440.

The previous prime is 2011120123. The next prime is 2011120157. The reversal of 2011120144 is 4410211102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 5713234 + ... + 5713585.

It is an arithmetic number, because the mean of its divisors is an integer number (212538852).

Almost surely, 2^2011120144 is an apocalyptic number.

It is an amenable number.

2011120144 is an abundant number, since it is smaller than the sum of its proper divisors (2239656896).

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

2011120144 is a wasteful number, since it uses less digits than its factorization.

2011120144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11426838 (or 11426832 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 2011120144 is about 44845.5142015341. The cubic root of 2011120144 is about 1262.2518193860.

Adding to 2011120144 its reverse (4410211102), we get a palindrome (6421331246).

The spelling of 2011120144 in words is "two billion, eleven million, one hundred twenty thousand, one hundred forty-four".