1205304113101 has 4 divisors (see below), whose sum is σ = 1314877214304. Its totient is φ = 1095731011900.

The previous prime is 1205304113093. The next prime is 1205304113129. The reversal of 1205304113101 is 1013114035021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1205304113101 - 2³ = 1205304113093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205304143101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54786550585 + ... + 54786550606.

It is an arithmetic number, because the mean of its divisors is an integer number (328719303576).

Almost surely, 2^{1205304113101} is an apocalyptic number.

1205304113101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1205304113101 is a deficient number, since it is larger than the sum of its proper divisors (109573101203).

1205304113101 is a wasteful number, since it uses less digits than its factorization.

1205304113101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109573101202.

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 1205304113101 its reverse (1013114035021), we get a palindrome (2218418148122).

The spelling of 1205304113101 in words is "one trillion, two hundred five billion, three hundred four million, one hundred thirteen thousand, one hundred one".