13110111230221 has 4 divisors (see below), whose sum is σ = 13131498035452. Its totient is φ = 13088724424992.

The previous prime is 13110111230219. The next prime is 13110111230243. The reversal of 13110111230221 is 12203211101131.

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 63126562500 + 13046984667721 = 251250^2 + 3612061^2 .

It is a cyclic number.

It is not a de Polignac number, because 13110111230221 - 2¹ = 13110111230219 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 (13110111240221) 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, 10693401696 + ... + 10693402921.

It is an arithmetic number, because the mean of its divisors is an integer number (3282874508863).

Almost surely, 2^{13110111230221} is an apocalyptic number.

It is an amenable number.

13110111230221 is a deficient number, since it is larger than the sum of its proper divisors (21386805231).

13110111230221 is an equidigital number, since it uses as much as digits as its factorization.

13110111230221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21386805230.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 13110111230221 its reverse (12203211101131), we get a palindrome (25313322331352).

The spelling of 13110111230221 in words is "thirteen trillion, one hundred ten billion, one hundred eleven million, two hundred thirty thousand, two hundred twenty-one".