121100110211 has 2 divisors, whose sum is σ = 121100110212. Its totient is φ = 121100110210.

The previous prime is 121100110199. The next prime is 121100110213. The reversal of 121100110211 is 112011001121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121100110211 - 2²⁶ = 121033001347 is a prime.

Together with 121100110213, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 121100110192 and 121100110201.

It is not a weakly prime, because it can be changed into another prime (121100110213) 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, 60550055105 + 60550055106.

It is an arithmetic number, because the mean of its divisors is an integer number (60550055106).

Almost surely, 2^121100110211 is an apocalyptic number.

121100110211 is a deficient number, since it is larger than the sum of its proper divisors (1).

121100110211 is an equidigital number, since it uses as much as digits as its factorization.

121100110211 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 11.

Adding to 121100110211 its reverse (112011001121), we get a palindrome (233111111332).

The spelling of 121100110211 in words is "one hundred twenty-one billion, one hundred million, one hundred ten thousand, two hundred eleven".