1201177841197 has 4 divisors (see below), whose sum is σ = 1230474861756. Its totient is φ = 1171880820640.

The previous prime is 1201177841179. The next prime is 1201177841203. The reversal of 1201177841197 is 7911487711021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 190788998436 + 1010388842761 = 436794^2 + 1005181^2 .

It is not a de Polignac number, because 1201177841197 - 2²³ = 1201169452589 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1201177841197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201177841137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14648510218 + ... + 14648510299.

It is an arithmetic number, because the mean of its divisors is an integer number (307618715439).

Almost surely, 2^{1201177841197} is an apocalyptic number.

It is an amenable number.

1201177841197 is a deficient number, since it is larger than the sum of its proper divisors (29297020559).

1201177841197 is an equidigital number, since it uses as much as digits as its factorization.

1201177841197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29297020558.

The product of its (nonzero) digits is 197568, while the sum is 49.

The spelling of 1201177841197 in words is "one trillion, two hundred one billion, one hundred seventy-seven million, eight hundred forty-one thousand, one hundred ninety-seven".