22144061 has 4 divisors (see below), whose sum is σ = 22219932. Its totient is φ = 22068192.

The previous prime is 22144049. The next prime is 22144079. The reversal of 22144061 is 16044122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16044122 = 2 ⋅8022061.

It can be written as a sum of positive squares in 2 ways, for example, as 13912900 + 8231161 = 3730^2 + 2869^2 .

It is a cyclic number.

It is not a de Polignac number, because 22144061 - 2⁶ = 22143997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22144021) 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, 37496 + ... + 38081.

It is an arithmetic number, because the mean of its divisors is an integer number (5554983).

Almost surely, 2^22144061 is an apocalyptic number.

It is an amenable number.

22144061 is a deficient number, since it is larger than the sum of its proper divisors (75871).

22144061 is an equidigital number, since it uses as much as digits as its factorization.

22144061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75870.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 22144061 is about 4705.7476557929. The cubic root of 22144061 is about 280.8142159195.

Adding to 22144061 its reverse (16044122), we get a palindrome (38188183).

The spelling of 22144061 in words is "twenty-two million, one hundred forty-four thousand, sixty-one".