11512011 has 24 divisors (see below), whose sum is σ = 18123264. Its totient is φ = 6479760.

The previous prime is 11511989. The next prime is 11512013. The reversal of 11512011 is 11021511.

It is not a de Polignac number, because 11512011 - 2⁵ = 11511979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11512013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9886 + ... + 10988.

It is an arithmetic number, because the mean of its divisors is an integer number (755136).

Almost surely, 2^11512011 is an apocalyptic number.

11512011 is a deficient number, since it is larger than the sum of its proper divisors (6611253).

11512011 is a wasteful number, since it uses less digits than its factorization.

11512011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191 (or 1184 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 12.

The square root of 11512011 is about 3392.9354547353. The cubic root of 11512011 is about 225.7964269636.

Adding to 11512011 its reverse (11021511), we get a palindrome (22533522).

The spelling of 11512011 in words is "eleven million, five hundred twelve thousand, eleven".