121301201012009 has 2 divisors, whose sum is σ = 121301201012010. Its totient is φ = 121301201012008.

The previous prime is 121301201011979. The next prime is 121301201012029. The reversal of 121301201012009 is 900210102103121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115304579572009 + 5996621440000 = 10737997^2 + 2448800^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121301201012009 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (121301201012029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60650600506004 + 60650600506005.

It is an arithmetic number, because the mean of its divisors is an integer number (60650600506005).

Almost surely, 2^{121301201012009} is an apocalyptic number.

It is an amenable number.

121301201012009 is a deficient number, since it is larger than the sum of its proper divisors (1).

121301201012009 is an equidigital number, since it uses as much as digits as its factorization.

121301201012009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 121301201012009 in words is "one hundred twenty-one trillion, three hundred one billion, two hundred one million, twelve thousand, nine".