121310212 has 48 divisors (see below), whose sum is σ = 229985280. Its totient is φ = 55814400.

The previous prime is 121310197. The next prime is 121310251. The reversal of 121310212 is 212013121.

It is a junction number, because it is equal to n+sod(n) for n = 121310192 and 121310201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 635037 + ... + 635227.

It is an arithmetic number, because the mean of its divisors is an integer number (4791360).

Almost surely, 2^121310212 is an apocalyptic number.

It is an amenable number.

121310212 is a deficient number, since it is larger than the sum of its proper divisors (108675068).

121310212 is a wasteful number, since it uses less digits than its factorization.

121310212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412 (or 410 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 121310212 is about 11014.0915195035. The cubic root of 121310212 is about 495.0310656285.

Adding to 121310212 its reverse (212013121), we get a palindrome (333323333).

The spelling of 121310212 in words is "one hundred twenty-one million, three hundred ten thousand, two hundred twelve".