22210442 has 4 divisors (see below), whose sum is σ = 33315666. Its totient is φ = 11105220.

The previous prime is 22210427. The next prime is 22210451. The reversal of 22210442 is 24401222.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 21799561 + 410881 = 4669^2 + 641^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22210442.

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, 5552609 + ... + 5552612.

Almost surely, 2^22210442 is an apocalyptic number.

22210442 is a deficient number, since it is larger than the sum of its proper divisors (11105224).

22210442 is a wasteful number, since it uses less digits than its factorization.

22210442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11105223.

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

The square root of 22210442 is about 4712.7955610232. The cubic root of 22210442 is about 281.0945338651.

Adding to 22210442 its reverse (24401222), we get a palindrome (46611664).

The spelling of 22210442 in words is "twenty-two million, two hundred ten thousand, four hundred forty-two".