121200212 has 12 divisors (see below), whose sum is σ = 242400480. Its totient is φ = 51942936.

The previous prime is 121200181. The next prime is 121200227. The reversal of 121200212 is 212002121.

It is a happy number.

121200212 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 121200193 and 121200202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2164262 + ... + 2164317.

It is an arithmetic number, because the mean of its divisors is an integer number (20200040).

Almost surely, 2^121200212 is an apocalyptic number.

It is an amenable number.

121200212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

121200212 is a wasteful number, since it uses less digits than its factorization.

121200212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4328590 (or 4328588 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 121200212 is about 11009.0967840237. The cubic root of 121200212 is about 494.8813945676.

Adding to 121200212 its reverse (212002121), we get a palindrome (333202333).

The spelling of 121200212 in words is "one hundred twenty-one million, two hundred thousand, two hundred twelve".