13110221220001 has 4 divisors (see below), whose sum is σ = 13141361888404. Its totient is φ = 13079080551600.

The previous prime is 13110221219999. The next prime is 13110221220007. The reversal of 13110221220001 is 10002212201131.

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 3120702435601 + 9989518784400 = 1766551^2 + 3160620^2 .

It is a cyclic number.

It is not a de Polignac number, because 13110221220001 - 2¹ = 13110221219999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13110221220007) 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, 15570333570 + ... + 15570334411.

It is an arithmetic number, because the mean of its divisors is an integer number (3285340472101).

Almost surely, 2^{13110221220001} is an apocalyptic number.

It is an amenable number.

13110221220001 is a deficient number, since it is larger than the sum of its proper divisors (31140668403).

13110221220001 is an equidigital number, since it uses as much as digits as its factorization.

13110221220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31140668402.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 13110221220001 its reverse (10002212201131), we get a palindrome (23112433421132).

The spelling of 13110221220001 in words is "thirteen trillion, one hundred ten billion, two hundred twenty-one million, two hundred twenty thousand, one".