22240001 has 16 divisors (see below), whose sum is σ = 26019840. Its totient is φ = 18617040.

The previous prime is 22239979. The next prime is 22240003. The reversal of 22240001 is 10004222.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22240001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22240003) 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 15 ways as a sum of consecutive naturals, for example, 72290 + ... + 72596.

It is an arithmetic number, because the mean of its divisors is an integer number (1626240).

Almost surely, 2^22240001 is an apocalyptic number.

It is an amenable number.

22240001 is a deficient number, since it is larger than the sum of its proper divisors (3779839).

22240001 is a wasteful number, since it uses less digits than its factorization.

22240001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 22240001 is about 4715.9305550443. The cubic root of 22240001 is about 281.2191777910.

Adding to 22240001 its reverse (10004222), we get a palindrome (32244223).

The spelling of 22240001 in words is "twenty-two million, two hundred forty thousand, one".