121123323321109 has 2 divisors, whose sum is σ = 121123323321110. Its totient is φ = 121123323321108.

The previous prime is 121123323321107. The next prime is 121123323321139. The reversal of 121123323321109 is 901123323321121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115401778920484 + 5721544400625 = 10742522^2 + 2391975^2 .

It is a cyclic number.

It is not a de Polignac number, because 121123323321109 - 2¹ = 121123323321107 is a prime.

Together with 121123323321107, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121123323321107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60561661660554 + 60561661660555.

It is an arithmetic number, because the mean of its divisors is an integer number (60561661660555).

Almost surely, 2^{121123323321109} is an apocalyptic number.

It is an amenable number.

121123323321109 is a deficient number, since it is larger than the sum of its proper divisors (1).

121123323321109 is an equidigital number, since it uses as much as digits as its factorization.

121123323321109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The spelling of 121123323321109 in words is "one hundred twenty-one trillion, one hundred twenty-three billion, three hundred twenty-three million, three hundred twenty-one thousand, one hundred nine".