1201113312101 has 4 divisors (see below), whose sum is σ = 1201463188332. Its totient is φ = 1200763435872.

The previous prime is 1201113312067. The next prime is 1201113312149. The reversal of 1201113312101 is 1012133111021.

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 819702079876 + 381411232225 = 905374^2 + 617585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201113312101 is a prime.

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 1201113312101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201113312401) 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, 174932966 + ... + 174939831.

It is an arithmetic number, because the mean of its divisors is an integer number (300365797083).

Almost surely, 2^{1201113312101} is an apocalyptic number.

It is an amenable number.

1201113312101 is a deficient number, since it is larger than the sum of its proper divisors (349876231).

1201113312101 is an equidigital number, since it uses as much as digits as its factorization.

1201113312101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349876230.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1201113312101 its reverse (1012133111021), we get a palindrome (2213246423122).

The spelling of 1201113312101 in words is "one trillion, two hundred one billion, one hundred thirteen million, three hundred twelve thousand, one hundred one".