2011130561 has 8 divisors (see below), whose sum is σ = 2194328448. Its totient is φ = 1827994000.

The previous prime is 2011130531. The next prime is 2011130573. The reversal of 2011130561 is 1650311102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2011130561 - 2⁶ = 2011130497 is a prime.

It is a super-2 number, since 2×2011130561² = 8089292266776349442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011130501) 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, 77951 + ... + 100491.

It is an arithmetic number, because the mean of its divisors is an integer number (274291056).

Almost surely, 2^2011130561 is an apocalyptic number.

It is an amenable number.

2011130561 is a deficient number, since it is larger than the sum of its proper divisors (183197887).

2011130561 is a wasteful number, since it uses less digits than its factorization.

2011130561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30663.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 2011130561 is about 44845.6303445497. The cubic root of 2011130561 is about 1262.2539987443.

Adding to 2011130561 its reverse (1650311102), we get a palindrome (3661441663).

The spelling of 2011130561 in words is "two billion, eleven million, one hundred thirty thousand, five hundred sixty-one".