Adding to 122121122 its reverse (221121221), we get a palindrome (343242343).
Subtracting 122121122 from its reverse (221121221), we obtain a palindrome (99000099).
It is a nude number because it is divisible by every one of its digits.
It is an unprimeable number.
Almost surely, 2122121122 is an apocalyptic number.
122121122 is a wasteful number, since it uses less digits than its factorization.
122121122 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4153.
The square root of 122121122 is about 11050.8425923094. The cubic root of 122121122 is about 496.1316448390.
The spelling of 122121122 in words is "one hundred twenty-two million, one hundred twenty-one thousand, one hundred twenty-two".