121122201121211 has 2 divisors, whose sum is σ = 121122201121212. Its totient is φ = 121122201121210.

The previous prime is 121122201121169. The next prime is 121122201121247. The reversal of 121122201121211 is 112121102221121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121122201121211 - 2⁴⁶ = 50753456943547 is a prime.

It is not a weakly prime, because it can be changed into another prime (121122201120211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60561100560605 + 60561100560606.

It is an arithmetic number, because the mean of its divisors is an integer number (60561100560606).

Almost surely, 2^{121122201121211} is an apocalyptic number.

121122201121211 is a deficient number, since it is larger than the sum of its proper divisors (1).

121122201121211 is an equidigital number, since it uses as much as digits as its factorization.

121122201121211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 121122201121211 its reverse (112121102221121), we get a palindrome (233243303342332).

The spelling of 121122201121211 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, two hundred one million, one hundred twenty-one thousand, two hundred eleven".