Adding to 122222 its reverse (222221), we get a palindrome (344443).
Subtracting 122222 from its reverse (222221), we obtain a palindrome (99999).
It is a sphenic number, since it is the product of 3 distinct primes.
It is a nude number because it is divisible by every one of its digits.
It is an Ulam number.
It is a plaindrome in base 10.
It is a congruent number.
It is an unprimeable number.
2122222 is an apocalyptic number.
122222 is a wasteful number, since it uses less digits than its factorization.
122222 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2682.
The square root of 122222 is about 349.6026315690. The cubic root of 122222 is about 49.6268216882.
The spelling of 122222 in words is "one hundred twenty-two thousand, two hundred twenty-two", and thus it is an iban number.