22215422 has 8 divisors (see below), whose sum is σ = 33544272. Its totient is φ = 11034000.

The previous prime is 22215409. The next prime is 22215491. The reversal of 22215422 is 22451222.

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

It is a junction number, because it is equal to n+sod(n) for n = 22215394 and 22215403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36479 + ... + 37082.

It is an arithmetic number, because the mean of its divisors is an integer number (4193034).

Almost surely, 2^22215422 is an apocalyptic number.

22215422 is a deficient number, since it is larger than the sum of its proper divisors (11328850).

22215422 is a wasteful number, since it uses less digits than its factorization.

22215422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73714.

The product of its digits is 640, while the sum is 20.

The square root of 22215422 is about 4713.3238802357. The cubic root of 22215422 is about 281.1155411938.

Adding to 22215422 its reverse (22451222), we get a palindrome (44666644).

The spelling of 22215422 in words is "twenty-two million, two hundred fifteen thousand, four hundred twenty-two".