12222201 has 16 divisors (see below), whose sum is σ = 17328384. Its totient is φ = 7636224.

The previous prime is 12222151. The next prime is 12222211. The reversal of 12222201 is 10222221.

It is not a de Polignac number, because 12222201 - 2⁹ = 12221689 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12222211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18391 + ... + 19043.

It is an arithmetic number, because the mean of its divisors is an integer number (1083024).

Almost surely, 2^12222201 is an apocalyptic number.

It is an amenable number.

12222201 is a deficient number, since it is larger than the sum of its proper divisors (5106183).

12222201 is a wasteful number, since it uses less digits than its factorization.

12222201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 12222201 is about 3496.0264587099. The cubic root of 12222201 is about 230.3473076780.

Adding to 12222201 its reverse (10222221), we get a palindrome (22444422).

It can be divided in two parts, 1222220 and 1, that added together give a palindrome (1222221).

The spelling of 12222201 in words is "twelve million, two hundred twenty-two thousand, two hundred one".