22222206 has 24 divisors (see below), whose sum is σ = 48532224. Its totient is φ = 7348320.

The previous prime is 22222199. The next prime is 22222223. The reversal of 22222206 is 60222222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2575 + ... + 7146.

It is an arithmetic number, because the mean of its divisors is an integer number (2022176).

Almost surely, 2^22222206 is an apocalyptic number.

22222206 is an abundant number, since it is smaller than the sum of its proper divisors (26310018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22222206 is a wasteful number, since it uses less digits than its factorization.

22222206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9856 (or 9853 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 22222206 is about 4714.0434872835. The cubic root of 22222206 is about 281.1441533555.

Adding to 22222206 its reverse (60222222), we get a palindrome (82444428).

The spelling of 22222206 in words is "twenty-two million, two hundred twenty-two thousand, two hundred six".