22044001 has 4 divisors (see below), whose sum is σ = 25193152. Its totient is φ = 18894852.

The previous prime is 22043999. The next prime is 22044013. The reversal of 22044001 is 10044022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22044001 - 2¹ = 22043999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22044091) 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, 1574565 + ... + 1574578.

It is an arithmetic number, because the mean of its divisors is an integer number (6298288).

Almost surely, 2^22044001 is an apocalyptic number.

It is an amenable number.

22044001 is a deficient number, since it is larger than the sum of its proper divisors (3149151).

22044001 is an equidigital number, since it uses as much as digits as its factorization.

22044001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3149150.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 22044001 is about 4695.1039392116. The cubic root of 22044001 is about 280.3906155306.

Adding to 22044001 its reverse (10044022), we get a palindrome (32088023).

The spelling of 22044001 in words is "twenty-two million, forty-four thousand, one".