2011124440 has 64 divisors (see below), whose sum is σ = 4920552000. Its totient is φ = 735340032.

The previous prime is 2011124413. The next prime is 2011124527. The reversal of 2011124440 is 444211102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34786 + ... + 72334.

It is an arithmetic number, because the mean of its divisors is an integer number (76883625).

Almost surely, 2^2011124440 is an apocalyptic number.

2011124440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2011124440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2460276000).

2011124440 is an abundant number, since it is smaller than the sum of its proper divisors (2909427560).

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

2011124440 is a wasteful number, since it uses less digits than its factorization.

2011124440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37676 (or 37672 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 2011124440 is about 44845.5620992758. The cubic root of 2011124440 is about 1262.2527181604.

Adding to 2011124440 its reverse (444211102), we get a palindrome (2455335542).

It can be divided in two parts, 20111 and 24440, that added together give a triangular number (44551 = T₂₉₈).

The spelling of 2011124440 in words is "two billion, eleven million, one hundred twenty-four thousand, four hundred forty".