121230211 has 2 divisors, whose sum is σ = 121230212. Its totient is φ = 121230210.

The previous prime is 121230209. The next prime is 121230233. The reversal of 121230211 is 112032121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121230211 - 2¹ = 121230209 is a prime.

Together with 121230209, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 121230191 and 121230200.

It is not a weakly prime, because it can be changed into another prime (121230271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60615105 + 60615106.

It is an arithmetic number, because the mean of its divisors is an integer number (60615106).

Almost surely, 2^121230211 is an apocalyptic number.

121230211 is a deficient number, since it is larger than the sum of its proper divisors (1).

121230211 is an equidigital number, since it uses as much as digits as its factorization.

121230211 is an odious number, because the sum of its binary digits is odd.

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

The square root of 121230211 is about 11010.4591639041. The cubic root of 121230211 is about 494.9222215651.

Adding to 121230211 its reverse (112032121), we get a palindrome (233262332).

The spelling of 121230211 in words is "one hundred twenty-one million, two hundred thirty thousand, two hundred eleven".