201113131321 has 4 divisors (see below), whose sum is σ = 201122304372. Its totient is φ = 201103958272.

The previous prime is 201113131259. The next prime is 201113131379. The reversal of 201113131321 is 123131311102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123131311102 = 2 ⋅61565655551.

It can be written as a sum of positive squares in 2 ways, for example, as 163636430400 + 37476700921 = 404520^2 + 193589^2 .

It is a cyclic number.

It is not a de Polignac number, because 201113131321 - 2¹⁵ = 201113098553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201113131421) 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, 4553560 + ... + 4597513.

It is an arithmetic number, because the mean of its divisors is an integer number (50280576093).

Almost surely, 2^201113131321 is an apocalyptic number.

It is an amenable number.

201113131321 is a deficient number, since it is larger than the sum of its proper divisors (9173051).

201113131321 is an equidigital number, since it uses as much as digits as its factorization.

201113131321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9173050.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 201113131321 its reverse (123131311102), we get a palindrome (324244442423).

The spelling of 201113131321 in words is "two hundred one billion, one hundred thirteen million, one hundred thirty-one thousand, three hundred twenty-one".