22221466 has 8 divisors (see below), whose sum is σ = 33544980. Its totient is φ = 11039808.

The previous prime is 22221461. The next prime is 22221487. The reversal of 22221466 is 66412222.

It can be written as a sum of positive squares in 2 ways, for example, as 21818241 + 403225 = 4671^2 + 635^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 22221466.

It is not an unprimeable number, because it can be changed into a prime (22221461) 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 3 ways as a sum of consecutive naturals, for example, 35071 + ... + 35698.

Almost surely, 2^22221466 is an apocalyptic number.

22221466 is a deficient number, since it is larger than the sum of its proper divisors (11323514).

22221466 is a wasteful number, since it uses less digits than its factorization.

22221466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70928.

The product of its digits is 2304, while the sum is 25.

The square root of 22221466 is about 4713.9649977487. The cubic root of 22221466 is about 281.1410326185.

Adding to 22221466 its reverse (66412222), we get a palindrome (88633688).

The spelling of 22221466 in words is "twenty-two million, two hundred twenty-one thousand, four hundred sixty-six".