121012322209 has 2 divisors, whose sum is σ = 121012322210. Its totient is φ = 121012322208.

The previous prime is 121012322203. The next prime is 121012322287. The reversal of 121012322209 is 902223210121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96770766400 + 24241555809 = 311080^2 + 155697^2 .

It is a cyclic number.

It is not a de Polignac number, because 121012322209 - 2³ = 121012322201 is a prime.

It is not a weakly prime, because it can be changed into another prime (121012322201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60506161104 + 60506161105.

It is an arithmetic number, because the mean of its divisors is an integer number (60506161105).

Almost surely, 2^121012322209 is an apocalyptic number.

It is an amenable number.

121012322209 is a deficient number, since it is larger than the sum of its proper divisors (1).

121012322209 is an equidigital number, since it uses as much as digits as its factorization.

121012322209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

It can be divided in two parts, 12101232 and 2209, that added together give a square (12103441 = 3479²).

The spelling of 121012322209 in words is "one hundred twenty-one billion, twelve million, three hundred twenty-two thousand, two hundred nine".