11165220052 has 48 divisors (see below), whose sum is σ = 23190773760. Its totient is φ = 4602028032.

The previous prime is 11165220043. The next prime is 11165220089. The reversal of 11165220052 is 25002256111.

It is a junction number, because it is equal to n+sod(n) for n = 11165219999 and 11165220026.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181933 + ... + 235435.

It is an arithmetic number, because the mean of its divisors is an integer number (483141120).

Almost surely, 2^11165220052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11165220052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11595386880).

11165220052 is an abundant number, since it is smaller than the sum of its proper divisors (12025553708).

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

11165220052 is a wasteful number, since it uses less digits than its factorization.

11165220052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53800 (or 53798 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 11165220052 its reverse (25002256111), we get a palindrome (36167476163).

The spelling of 11165220052 in words is "eleven billion, one hundred sixty-five million, two hundred twenty thousand, fifty-two".