121202112209 has 2 divisors, whose sum is σ = 121202112210. Its totient is φ = 121202112208.

The previous prime is 121202112193. The next prime is 121202112223. The reversal of 121202112209 is 902211202121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67718611984 + 53483500225 = 260228^2 + 231265^2 .

It is a cyclic number.

It is not a de Polignac number, because 121202112209 - 2⁴ = 121202112193 is a prime.

It is a super-3 number, since 3×121202112209³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (121201112209) 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, 60601056104 + 60601056105.

It is an arithmetic number, because the mean of its divisors is an integer number (60601056105).

Almost surely, 2^121202112209 is an apocalyptic number.

It is an amenable number.

121202112209 is a deficient number, since it is larger than the sum of its proper divisors (1).

121202112209 is an equidigital number, since it uses as much as digits as its factorization.

121202112209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 121202112209 in words is "one hundred twenty-one billion, two hundred two million, one hundred twelve thousand, two hundred nine".