22216001 has 8 divisors (see below), whose sum is σ = 23042880. Its totient is φ = 21393232.

The previous prime is 22215989. The next prime is 22216009. The reversal of 22216001 is 10061222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22216001 - 2⁶ = 22215937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22216009) 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 7 ways as a sum of consecutive naturals, for example, 13826 + ... + 15348.

It is an arithmetic number, because the mean of its divisors is an integer number (2880360).

Almost surely, 2^22216001 is an apocalyptic number.

It is an amenable number.

22216001 is a deficient number, since it is larger than the sum of its proper divisors (826879).

22216001 is a wasteful number, since it uses less digits than its factorization.

22216001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 22216001 is about 4713.3853014580. The cubic root of 22216001 is about 281.1179834084.

Adding to 22216001 its reverse (10061222), we get a palindrome (32277223).

The spelling of 22216001 in words is "twenty-two million, two hundred sixteen thousand, one".