121400014400209 has 2 divisors, whose sum is σ = 121400014400210. Its totient is φ = 121400014400208.

The previous prime is 121400014400201. The next prime is 121400014400213. The reversal of 121400014400209 is 902004410004121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107152620617025 + 14247393783184 = 10351455^2 + 3774572^2 .

It is a cyclic number.

It is not a de Polignac number, because 121400014400209 - 2³ = 121400014400201 is a prime.

It is not a weakly prime, because it can be changed into another prime (121400014400201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60700007200104 + 60700007200105.

It is an arithmetic number, because the mean of its divisors is an integer number (60700007200105).

Almost surely, 2^{121400014400209} is an apocalyptic number.

It is an amenable number.

121400014400209 is a deficient number, since it is larger than the sum of its proper divisors (1).

121400014400209 is an equidigital number, since it uses as much as digits as its factorization.

121400014400209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

The spelling of 121400014400209 in words is "one hundred twenty-one trillion, four hundred billion, fourteen million, four hundred thousand, two hundred nine".