121122212 has 36 divisors (see below), whose sum is σ = 232994580.
Its totient is φ = 55017984.
The previous prime is 121122193. The next prime is 121122269. The reversal of 121122212 is 212221121.
It can be written as a sum of positive squares in 6 ways, for example, as 649636 + 120472576 = 806^2 + 10976^2
It is a nude number because it is divisible by every one of its digits.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31718 + ... + 35330.
Almost surely, 2121122212 is an apocalyptic number.
It is an amenable number.
121122212 is a deficient number, since it is larger than the sum of its proper divisors (111872368).
121122212 is a wasteful number, since it uses less digits than its factorization.
121122212 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3680 (or 3661 counting only the distinct ones).
The product of its digits is 32, while the sum is 14.
The square root of 121122212 is about 11005.5536889336.
The cubic root of 121122212 is about 494.7752092957.
Adding to 121122212 its reverse (212221121), we get a palindrome (333343333).
The spelling of 121122212 in words is "one hundred twenty-one million, one hundred twenty-two thousand, two hundred twelve".