13220111211 has 16 divisors (see below), whose sum is σ = 18113297664. Its totient is φ = 8570431584.

The previous prime is 13220111209. The next prime is 13220111227. The reversal of 13220111211 is 11211102231.

It is not a de Polignac number, because 13220111211 - 2¹ = 13220111209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13220111711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172776 + ... + 237258.

It is an arithmetic number, because the mean of its divisors is an integer number (1132081104).

Almost surely, 2^13220111211 is an apocalyptic number.

13220111211 is a deficient number, since it is larger than the sum of its proper divisors (4893186453).

13220111211 is a wasteful number, since it uses less digits than its factorization.

13220111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66370.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 13220111211 its reverse (11211102231), we get a palindrome (24431213442).

The spelling of 13220111211 in words is "thirteen billion, two hundred twenty million, one hundred eleven thousand, two hundred eleven".