2011123044 has 144 divisors (see below), whose sum is σ = 5964661248. Its totient is φ = 559436544.

The previous prime is 2011123027. The next prime is 2011123061. The reversal of 2011123044 is 4403211102.

It is an interprime number because it is at equal distance from previous prime (2011123027) and next prime (2011123061).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3280482 + ... + 3281094.

Almost surely, 2^2011123044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2011123044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2982330624).

2011123044 is an abundant number, since it is smaller than the sum of its proper divisors (3953538204).

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

2011123044 is a wasteful number, since it uses less digits than its factorization.

2011123044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954 (or 949 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2011123044 is about 44845.5465347452. The cubic root of 2011123044 is about 1262.2524261007.

Adding to 2011123044 its reverse (4403211102), we get a palindrome (6414334146).

The spelling of 2011123044 in words is "two billion, eleven million, one hundred twenty-three thousand, forty-four".