12201415549 has 4 divisors (see below), whose sum is σ = 12203108764. Its totient is φ = 12199722336.

The previous prime is 12201415529. The next prime is 12201415561. The reversal of 12201415549 is 94551410221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6618636025 + 5582779524 = 81355^2 + 74718^2 .

It is a cyclic number.

It is not a de Polignac number, because 12201415549 - 2⁵ = 12201415517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201415529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 835752 + ... + 850225.

It is an arithmetic number, because the mean of its divisors is an integer number (3050777191).

Almost surely, 2^12201415549 is an apocalyptic number.

It is an amenable number.

12201415549 is a deficient number, since it is larger than the sum of its proper divisors (1693215).

12201415549 is an equidigital number, since it uses as much as digits as its factorization.

12201415549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693214.

The product of its (nonzero) digits is 14400, while the sum is 34.

The spelling of 12201415549 in words is "twelve billion, two hundred one million, four hundred fifteen thousand, five hundred forty-nine".