2001112240 has 40 divisors (see below), whose sum is σ = 4854876768. Its totient is φ = 765642240.

The previous prime is 2001112237. The next prime is 2001112247. The reversal of 2001112240 is 422111002.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 2001112240.

It is not an unprimeable number, because it can be changed into a prime (2001112247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 541941 + ... + 545620.

Almost surely, 2^2001112240 is an apocalyptic number.

2001112240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001112240 is an abundant number, since it is smaller than the sum of its proper divisors (2853764528).

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

2001112240 is a wasteful number, since it uses less digits than its factorization.

2001112240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087597 (or 1087591 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2001112240 is about 44733.7930428440. The cubic root of 2001112240 is about 1260.1545623780.

Adding to 2001112240 its reverse (422111002), we get a palindrome (2423223242).

The spelling of 2001112240 in words is "two billion, one million, one hundred twelve thousand, two hundred forty".