12787201 has 4 divisors (see below), whose sum is σ = 14613952. Its totient is φ = 10960452.

The previous prime is 12787189. The next prime is 12787207. The reversal of 12787201 is 10278721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10278721 = 151 ⋅68071.

It is a cyclic number.

It is not a de Polignac number, because 12787201 - 2¹⁷ = 12656129 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12787201.

It is not an unprimeable number, because it can be changed into a prime (12787207) 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, 913365 + ... + 913378.

It is an arithmetic number, because the mean of its divisors is an integer number (3653488).

Almost surely, 2^12787201 is an apocalyptic number.

It is an amenable number.

12787201 is a deficient number, since it is larger than the sum of its proper divisors (1826751).

12787201 is an equidigital number, since it uses as much as digits as its factorization.

12787201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1826750.

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 12787201 is about 3575.9196020045. The cubic root of 12787201 is about 233.8434253407.

It can be divided in two parts, 1278720 and 1, that added together give a palindrome (1278721).

The spelling of 12787201 in words is "twelve million, seven hundred eighty-seven thousand, two hundred one".