12561201 has 12 divisors (see below), whose sum is σ = 18192720. Its totient is φ = 8351640.

The previous prime is 12561187. The next prime is 12561217. The reversal of 12561201 is 10216521.

It is not a de Polignac number, because 12561201 - 2¹⁷ = 12430129 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12561221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2106 + ... + 5436.

It is an arithmetic number, because the mean of its divisors is an integer number (1516060).

Almost surely, 2^12561201 is an apocalyptic number.

It is an amenable number.

12561201 is a deficient number, since it is larger than the sum of its proper divisors (5631519).

12561201 is a wasteful number, since it uses less digits than its factorization.

12561201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3756 (or 3753 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 12561201 is about 3544.1784661611. The cubic root of 12561201 is about 232.4575850480.

Adding to 12561201 its reverse (10216521), we get a palindrome (22777722).

The spelling of 12561201 in words is "twelve million, five hundred sixty-one thousand, two hundred one".