22442201 has 4 divisors (see below), whose sum is σ = 23216100. Its totient is φ = 21668304.

The previous prime is 22442179. The next prime is 22442207. The reversal of 22442201 is 10224422.

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 2 ways, for example, as 10086976 + 12355225 = 3176^2 + 3515^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22442201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22442201.

It is not an unprimeable number, because it can be changed into a prime (22442207) by changing a digit.

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, 386906 + ... + 386963.

It is an arithmetic number, because the mean of its divisors is an integer number (5804025).

Almost surely, 2^22442201 is an apocalyptic number.

It is an amenable number.

22442201 is a deficient number, since it is larger than the sum of its proper divisors (773899).

22442201 is an equidigital number, since it uses as much as digits as its factorization.

22442201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773898.

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

The square root of 22442201 is about 4737.3200229666. The cubic root of 22442201 is about 282.0688638556.

Adding to 22442201 its reverse (10224422), we get a palindrome (32666623).

The spelling of 22442201 in words is "twenty-two million, four hundred forty-two thousand, two hundred one".