22142222 has 8 divisors (see below), whose sum is σ = 33235272. Its totient is φ = 11063800.

The previous prime is 22142213. The next prime is 22142231. The reversal of 22142222 is 22224122.

It is an interprime number because it is at equal distance from previous prime (22142213) and next prime (22142231).

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

22142222 is a modest number, since divided by 2222 gives 2214 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 22142222.

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 in 3 ways as a sum of consecutive naturals, for example, 1697 + ... + 6867.

It is an arithmetic number, because the mean of its divisors is an integer number (4154409).

Almost surely, 2^22142222 is an apocalyptic number.

22142222 is a deficient number, since it is larger than the sum of its proper divisors (11093050).

22142222 is a wasteful number, since it uses less digits than its factorization.

22142222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7314.

The product of its digits is 256, while the sum is 17.

The square root of 22142222 is about 4705.5522523929. The cubic root of 22142222 is about 280.8064421024.

Adding to 22142222 its reverse (22224122), we get a palindrome (44366344).

The spelling of 22142222 in words is "twenty-two million, one hundred forty-two thousand, two hundred twenty-two".