22213605 has 8 divisors (see below), whose sum is σ = 35541792. Its totient is φ = 11847248.

The previous prime is 22213589. The next prime is 22213619. The reversal of 22213605 is 50631222.

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 22213605 - 2⁴ = 22213589 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 740439 + ... + 740468.

It is an arithmetic number, because the mean of its divisors is an integer number (4442724).

Almost surely, 2^22213605 is an apocalyptic number.

It is an amenable number.

22213605 is a deficient number, since it is larger than the sum of its proper divisors (13328187).

22213605 is a wasteful number, since it uses less digits than its factorization.

22213605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1480915.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 22213605 is about 4713.1311248468. The cubic root of 22213605 is about 281.1078768354.

Adding to 22213605 its reverse (50631222), we get a palindrome (72844827).

The spelling of 22213605 in words is "twenty-two million, two hundred thirteen thousand, six hundred five".