12201415550 has 48 divisors (see below), whose sum is σ = 23971656192. Its totient is φ = 4613263200.

The previous prime is 12201415529. The next prime is 12201415561. The reversal of 12201415550 is 5551410221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24884 + ... + 158183.

It is an arithmetic number, because the mean of its divisors is an integer number (499409504).

Almost surely, 2^12201415550 is an apocalyptic number.

12201415550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12201415550 is a deficient number, since it is larger than the sum of its proper divisors (11770240642).

12201415550 is a wasteful number, since it uses less digits than its factorization.

12201415550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183153 (or 183148 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

Adding to 12201415550 its reverse (5551410221), we get a palindrome (17752825771).

The spelling of 12201415550 in words is "twelve billion, two hundred one million, four hundred fifteen thousand, five hundred fifty".