22215243 has 8 divisors (see below), whose sum is σ = 31362768. Its totient is φ = 13938944.

The previous prime is 22215241. The next prime is 22215269. The reversal of 22215243 is 34251222.

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 22215243 - 2¹ = 22215241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22215241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217746 + ... + 217847.

It is an arithmetic number, because the mean of its divisors is an integer number (3920346).

Almost surely, 2^22215243 is an apocalyptic number.

22215243 is a deficient number, since it is larger than the sum of its proper divisors (9147525).

22215243 is a wasteful number, since it uses less digits than its factorization.

22215243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435613.

The product of its digits is 960, while the sum is 21.

The square root of 22215243 is about 4713.3048914748. The cubic root of 22215243 is about 281.1147861655.

Adding to 22215243 its reverse (34251222), we get a palindrome (56466465).

The spelling of 22215243 in words is "twenty-two million, two hundred fifteen thousand, two hundred forty-three".