11500055211 has 16 divisors (see below), whose sum is σ = 15868055808. Its totient is φ = 7402543200.

The previous prime is 11500055207. The next prime is 11500055267. The reversal of 11500055211 is 11255000511.

It is not a de Polignac number, because 11500055211 - 2² = 11500055207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11500055291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 380895 + ... + 409976.

It is an arithmetic number, because the mean of its divisors is an integer number (991753488).

Almost surely, 2^11500055211 is an apocalyptic number.

11500055211 is a deficient number, since it is larger than the sum of its proper divisors (4368000597).

11500055211 is a wasteful number, since it uses less digits than its factorization.

11500055211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791042.

The product of its (nonzero) digits is 250, while the sum is 21.

Adding to 11500055211 its reverse (11255000511), we get a palindrome (22755055722).

The spelling of 11500055211 in words is "eleven billion, five hundred million, fifty-five thousand, two hundred eleven".