12221622 has 24 divisors (see below), whose sum is σ = 30263376. Its totient is φ = 3491856.

The previous prime is 12221611. The next prime is 12221669. The reversal of 12221622 is 22612221.

12221622 is a `hidden beast` number, since 1 + 22 + 21 + 622 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 12221595 and 12221604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48373 + ... + 48624.

It is an arithmetic number, because the mean of its divisors is an integer number (1260974).

Almost surely, 2^12221622 is an apocalyptic number.

12221622 is an abundant number, since it is smaller than the sum of its proper divisors (18041754).

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

12221622 is a wasteful number, since it uses less digits than its factorization.

12221622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97012 (or 97009 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 12221622 is about 3495.9436494314. The cubic root of 12221622 is about 230.3436702208.

Adding to 12221622 its reverse (22612221), we get a palindrome (34833843).

The spelling of 12221622 in words is "twelve million, two hundred twenty-one thousand, six hundred twenty-two".