1205364340121 has 8 divisors (see below), whose sum is σ = 1276284358944. Its totient is φ = 1134446125120.

The previous prime is 1205364340109. The next prime is 1205364340171. The reversal of 1205364340121 is 1210434635021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1205364340121 - 2³⁰ = 1204290598297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1205364340171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1071746 + ... + 1886628.

It is an arithmetic number, because the mean of its divisors is an integer number (159535544868).

Almost surely, 2^{1205364340121} is an apocalyptic number.

It is an amenable number.

1205364340121 is a deficient number, since it is larger than the sum of its proper divisors (70920018823).

1205364340121 is an equidigital number, since it uses as much as digits as its factorization.

1205364340121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901911.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 1205364340121 its reverse (1210434635021), we get a palindrome (2415798975142).

The spelling of 1205364340121 in words is "one trillion, two hundred five billion, three hundred sixty-four million, three hundred forty thousand, one hundred twenty-one".