22218334 has 8 divisors (see below), whose sum is σ = 35081640. Its totient is φ = 10524456.

The previous prime is 22218331. The next prime is 22218341. The reversal of 22218334 is 43381222.

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

It is a junction number, because it is equal to n+sod(n) for n = 22218299 and 22218308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22218331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292309 + ... + 292384.

It is an arithmetic number, because the mean of its divisors is an integer number (4385205).

Almost surely, 2^22218334 is an apocalyptic number.

22218334 is a deficient number, since it is larger than the sum of its proper divisors (12863306).

22218334 is a wasteful number, since it uses less digits than its factorization.

22218334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584714.

The product of its digits is 2304, while the sum is 25.

The square root of 22218334 is about 4713.6327816240. The cubic root of 22218334 is about 281.1278235427.

Adding to 22218334 its reverse (43381222), we get a palindrome (65599556).

The spelling of 22218334 in words is "twenty-two million, two hundred eighteen thousand, three hundred thirty-four".