11121007566 has 16 divisors (see below), whose sum is σ = 22251675600. Its totient is φ = 3705392448.

The previous prime is 11121007523. The next prime is 11121007619. The reversal of 11121007566 is 66570012111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387511 + ... + 415218.

It is an arithmetic number, because the mean of its divisors is an integer number (1390729725).

Almost surely, 2^11121007566 is an apocalyptic number.

11121007566 is an abundant number, since it is smaller than the sum of its proper divisors (11130668034).

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

11121007566 is a wasteful number, since it uses less digits than its factorization.

11121007566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805043.

The product of its (nonzero) digits is 2520, while the sum is 30.

Adding to 11121007566 its reverse (66570012111), we get a palindrome (77691019677).

The spelling of 11121007566 in words is "eleven billion, one hundred twenty-one million, seven thousand, five hundred sixty-six".