22231201 has 4 divisors (see below), whose sum is σ = 22535812. Its totient is φ = 21926592.

The previous prime is 22231199. The next prime is 22231219. The reversal of 22231201 is 10213222.

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 17842176 + 4389025 = 4224^2 + 2095^2 .

It is a cyclic number.

It is not a de Polignac number, because 22231201 - 2¹ = 22231199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22231241) 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, 152196 + ... + 152341.

It is an arithmetic number, because the mean of its divisors is an integer number (5633953).

Almost surely, 2^22231201 is an apocalyptic number.

It is an amenable number.

22231201 is a deficient number, since it is larger than the sum of its proper divisors (304611).

22231201 is an equidigital number, since it uses as much as digits as its factorization.

22231201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304610.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 22231201 is about 4714.9974549304. The cubic root of 22231201 is about 281.1820816410.

Adding to 22231201 its reverse (10213222), we get a palindrome (32444423).

The spelling of 22231201 in words is "twenty-two million, two hundred thirty-one thousand, two hundred one".