1201007917897 has 2 divisors, whose sum is σ = 1201007917898. Its totient is φ = 1201007917896.

The previous prime is 1201007917891. The next prime is 1201007917951. The reversal of 1201007917897 is 7987197001021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1155235882761 + 45772035136 = 1074819^2 + 213944^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201007917897 - 2³¹ = 1198860434249 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201007917891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600503958948 + 600503958949.

It is an arithmetic number, because the mean of its divisors is an integer number (600503958949).

Almost surely, 2^{1201007917897} is an apocalyptic number.

It is an amenable number.

1201007917897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201007917897 is an equidigital number, since it uses as much as digits as its factorization.

1201007917897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 444528, while the sum is 52.

The spelling of 1201007917897 in words is "one trillion, two hundred one billion, seven million, nine hundred seventeen thousand, eight hundred ninety-seven".