12211622 has 4 divisors (see below), whose sum is σ = 18317436. Its totient is φ = 6105810.

The previous prime is 12211603. The next prime is 12211657. The reversal of 12211622 is 22611221.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12211622.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3052904 + ... + 3052907.

It is an arithmetic number, because the mean of its divisors is an integer number (4579359).

Almost surely, 2^12211622 is an apocalyptic number.

12211622 is a deficient number, since it is larger than the sum of its proper divisors (6105814).

12211622 is an equidigital number, since it uses as much as digits as its factorization.

12211622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6105813.

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

The square root of 12211622 is about 3494.5131277476. The cubic root of 12211622 is about 230.2808289922.

Adding to 12211622 its reverse (22611221), we get a palindrome (34822843).

The spelling of 12211622 in words is "twelve million, two hundred eleven thousand, six hundred twenty-two".