1201243638107 has 2 divisors, whose sum is σ = 1201243638108. Its totient is φ = 1201243638106.

The previous prime is 1201243638083. The next prime is 1201243638169. The reversal of 1201243638107 is 7018363421021.

It is a weak prime.

It is an emirp because it is prime and its reverse (7018363421021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1201243638107 - 2¹² = 1201243634011 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201243638197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600621819053 + 600621819054.

It is an arithmetic number, because the mean of its divisors is an integer number (600621819054).

Almost surely, 2^{1201243638107} is an apocalyptic number.

1201243638107 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201243638107 is an equidigital number, since it uses as much as digits as its factorization.

1201243638107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 1201243638107 in words is "one trillion, two hundred one billion, two hundred forty-three million, six hundred thirty-eight thousand, one hundred seven".