12201447 has 4 divisors (see below), whose sum is σ = 16268600. Its totient is φ = 8134296.

The previous prime is 12201419. The next prime is 12201457. The reversal of 12201447 is 74410221.

It is a happy number.

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

It is not a de Polignac number, because 12201447 - 2⁸ = 12201191 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 (12201407) 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, 2033572 + ... + 2033577.

It is an arithmetic number, because the mean of its divisors is an integer number (4067150).

Almost surely, 2^12201447 is an apocalyptic number.

12201447 is a deficient number, since it is larger than the sum of its proper divisors (4067153).

12201447 is an equidigital number, since it uses as much as digits as its factorization.

12201447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4067152.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 12201447 is about 3493.0569706204. The cubic root of 12201447 is about 230.2168528195.

Adding to 12201447 its reverse (74410221), we get a palindrome (86611668).

The spelling of 12201447 in words is "twelve million, two hundred one thousand, four hundred forty-seven".