121122021212209 has 2 divisors, whose sum is σ = 121122021212210. Its totient is φ = 121122021212208.

The previous prime is 121122021212119. The next prime is 121122021212279. The reversal of 121122021212209 is 902212120221121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61140326515984 + 59981694696225 = 7819228^2 + 7744785^2 .

It is a cyclic number.

It is not a de Polignac number, because 121122021212209 - 2¹¹ = 121122021210161 is a prime.

It is not a weakly prime, because it can be changed into another prime (121122021212279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60561010606104 + 60561010606105.

It is an arithmetic number, because the mean of its divisors is an integer number (60561010606105).

Almost surely, 2^{121122021212209} is an apocalyptic number.

It is an amenable number.

121122021212209 is a deficient number, since it is larger than the sum of its proper divisors (1).

121122021212209 is an equidigital number, since it uses as much as digits as its factorization.

121122021212209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 121122021212209 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, twenty-one million, two hundred twelve thousand, two hundred nine".