12116550 has 24 divisors (see below), whose sum is σ = 30049416. Its totient is φ = 3231040.

The previous prime is 12116539. The next prime is 12116551. The reversal of 12116550 is 5561121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12116551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40239 + ... + 40538.

It is an arithmetic number, because the mean of its divisors is an integer number (1252059).

Almost surely, 2^12116550 is an apocalyptic number.

12116550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12116550 is an abundant number, since it is smaller than the sum of its proper divisors (17932866).

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

12116550 is a wasteful number, since it uses less digits than its factorization.

12116550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80792 (or 80787 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 12116550 is about 3480.8835085363. The cubic root of 12116550 is about 229.6816642045.

Adding to 12116550 its reverse (5561121), we get a palindrome (17677671).

The spelling of 12116550 in words is "twelve million, one hundred sixteen thousand, five hundred fifty".