1200112204121 has 2 divisors, whose sum is σ = 1200112204122. Its totient is φ = 1200112204120.

The previous prime is 1200112204073. The next prime is 1200112204153. The reversal of 1200112204121 is 1214022110021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1059160014025 + 140952190096 = 1029155^2 + 375436^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200112204121 - 2³⁴ = 1182932334937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1200112204121.

It is not a weakly prime, because it can be changed into another prime (1200112204721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600056102060 + 600056102061.

It is an arithmetic number, because the mean of its divisors is an integer number (600056102061).

Almost surely, 2^{1200112204121} is an apocalyptic number.

It is an amenable number.

1200112204121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200112204121 is an equidigital number, since it uses as much as digits as its factorization.

1200112204121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1200112204121 its reverse (1214022110021), we get a palindrome (2414134314142).

The spelling of 1200112204121 in words is "one trillion, two hundred billion, one hundred twelve million, two hundred four thousand, one hundred twenty-one".