12201222 has 32 divisors (see below), whose sum is σ = 26772480. Its totient is φ = 3676320.

The previous prime is 12201193. The next prime is 12201229. The reversal of 12201222 is 22210221.

It is a junction number, because it is equal to n+sod(n) for n = 12201198 and 12201207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14304 + ... + 15132.

It is an arithmetic number, because the mean of its divisors is an integer number (836640).

Almost surely, 2^12201222 is an apocalyptic number.

12201222 is an abundant number, since it is smaller than the sum of its proper divisors (14571258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12201222 is a wasteful number, since it uses less digits than its factorization.

12201222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068.

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

The square root of 12201222 is about 3493.0247637256. The cubic root of 12201222 is about 230.2154377111.

Adding to 12201222 its reverse (22210221), we get a palindrome (34411443).

It can be divided in two parts, 1220 and 1222, that added together give a palindrome (2442).

The spelling of 12201222 in words is "twelve million, two hundred one thousand, two hundred twenty-two".