121012312030189 has 2 divisors, whose sum is σ = 121012312030190. Its totient is φ = 121012312030188.

The previous prime is 121012312030177. The next prime is 121012312030213. The reversal of 121012312030189 is 981030213210121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60588632176900 + 60423679853289 = 7783870^2 + 7773267^2 .

It is a cyclic number.

It is not a de Polignac number, because 121012312030189 - 2⁷ = 121012312030061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121012312000189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60506156015094 + 60506156015095.

It is an arithmetic number, because the mean of its divisors is an integer number (60506156015095).

Almost surely, 2^{121012312030189} is an apocalyptic number.

It is an amenable number.

121012312030189 is a deficient number, since it is larger than the sum of its proper divisors (1).

121012312030189 is an equidigital number, since it uses as much as digits as its factorization.

121012312030189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 34.

The spelling of 121012312030189 in words is "one hundred twenty-one trillion, twelve billion, three hundred twelve million, thirty thousand, one hundred eighty-nine".