12201644399 has 6 divisors (see below), whose sum is σ = 14193749664. Its totient is φ = 10458552300.

The previous prime is 12201644387. The next prime is 12201644431. The reversal of 12201644399 is 99344610221.

It is not a de Polignac number, because 12201644399 - 2⁴ = 12201644383 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 (12201644309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 124506527 + ... + 124506624.

It is an arithmetic number, because the mean of its divisors is an integer number (2365624944).

Almost surely, 2^12201644399 is an apocalyptic number.

12201644399 is a deficient number, since it is larger than the sum of its proper divisors (1992105265).

12201644399 is an equidigital number, since it uses as much as digits as its factorization.

12201644399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249013165 (or 249013158 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 12201644399 in words is "twelve billion, two hundred one million, six hundred forty-four thousand, three hundred ninety-nine".