12611222 has 16 divisors (see below), whose sum is σ = 21258720. Its totient is φ = 5567232.

The previous prime is 12611197. The next prime is 12611237. The reversal of 12611222 is 22211621.

It is a self number, because there is not a number n which added to its sum of digits gives 12611222.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9947 + ... + 11142.

It is an arithmetic number, because the mean of its divisors is an integer number (1328670).

Almost surely, 2^12611222 is an apocalyptic number.

12611222 is a deficient number, since it is larger than the sum of its proper divisors (8647498).

12611222 is a wasteful number, since it uses less digits than its factorization.

12611222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21127.

The product of its digits is 96, while the sum is 17.

The square root of 12611222 is about 3551.2282382297. The cubic root of 12611222 is about 232.7657392416.

Adding to 12611222 its reverse (22211621), we get a palindrome (34822843).

The spelling of 12611222 in words is "twelve million, six hundred eleven thousand, two hundred twenty-two".