121122021201211 has 2 divisors, whose sum is σ = 121122021201212. Its totient is φ = 121122021201210.

The previous prime is 121122021201151. The next prime is 121122021201217. The reversal of 121122021201211 is 112102120221121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121122021201211 - 2¹⁷ = 121122021070139 is a prime.

It is not a weakly prime, because it can be changed into another prime (121122021201217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60561010600605 + 60561010600606.

It is an arithmetic number, because the mean of its divisors is an integer number (60561010600606).

Almost surely, 2^{121122021201211} is an apocalyptic number.

121122021201211 is a deficient number, since it is larger than the sum of its proper divisors (1).

121122021201211 is an equidigital number, since it uses as much as digits as its factorization.

121122021201211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121122021201211 its reverse (112102120221121), we get a palindrome (233224141422332).

The spelling of 121122021201211 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, twenty-one million, two hundred one thousand, two hundred eleven".