121200211211 has 2 divisors, whose sum is σ = 121200211212. Its totient is φ = 121200211210.

The previous prime is 121200211193. The next prime is 121200211219. The reversal of 121200211211 is 112112002121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121200211211 - 2⁶ = 121200211147 is a prime.

It is not a weakly prime, because it can be changed into another prime (121200211219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600105605 + 60600105606.

It is an arithmetic number, because the mean of its divisors is an integer number (60600105606).

Almost surely, 2^121200211211 is an apocalyptic number.

121200211211 is a deficient number, since it is larger than the sum of its proper divisors (1).

121200211211 is an equidigital number, since it uses as much as digits as its factorization.

121200211211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121200211211 its reverse (112112002121), we get a palindrome (233312213332).

The spelling of 121200211211 in words is "one hundred twenty-one billion, two hundred million, two hundred eleven thousand, two hundred eleven".