22213655 has 8 divisors (see below), whose sum is σ = 26901600. Its totient is φ = 17607456.

The previous prime is 22213651. The next prime is 22213661. The reversal of 22213655 is 55631222.

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 22213655 - 2² = 22213651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22213651) 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, 19835 + ... + 20924.

It is an arithmetic number, because the mean of its divisors is an integer number (3362700).

Almost surely, 2^22213655 is an apocalyptic number.

22213655 is a deficient number, since it is larger than the sum of its proper divisors (4687945).

22213655 is a wasteful number, since it uses less digits than its factorization.

22213655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40873.

The product of its digits is 3600, while the sum is 26.

The square root of 22213655 is about 4713.1364291733. The cubic root of 22213655 is about 281.1080877480.

Adding to 22213655 its reverse (55631222), we get a palindrome (77844877).

The spelling of 22213655 in words is "twenty-two million, two hundred thirteen thousand, six hundred fifty-five".