121000211 has 2 divisors, whose sum is σ = 121000212. Its totient is φ = 121000210.

The previous prime is 121000199. The next prime is 121000213. The reversal of 121000211 is 112000121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121000211 - 2⁶ = 121000147 is a prime.

Together with 121000213, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121000213) by changing a digit.

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 as a sum of consecutive naturals, namely, 60500105 + 60500106.

It is an arithmetic number, because the mean of its divisors is an integer number (60500106).

Almost surely, 2^121000211 is an apocalyptic number.

121000211 is a deficient number, since it is larger than the sum of its proper divisors (1).

121000211 is an equidigital number, since it uses as much as digits as its factorization.

121000211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 121000211 is about 11000.0095909049. The cubic root of 121000211 is about 494.6090318246.

Adding to 121000211 its reverse (112000121), we get a palindrome (233000332).

The spelling of 121000211 in words is "one hundred twenty-one million, two hundred eleven", and thus it is an aban number.