13220111111 has 8 divisors (see below), whose sum is σ = 13302542880. Its totient is φ = 13137834528.

The previous prime is 13220111087. The next prime is 13220111117. The reversal of 13220111111 is 11111102231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13220111111 - 2¹⁰ = 13220110087 is a prime.

It is a Duffinian number.

13220111111 is a modest number, since divided by 111111 gives 13220 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220111117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134510 + ... + 211028.

It is an arithmetic number, because the mean of its divisors is an integer number (1662817860).

Almost surely, 2^13220111111 is an apocalyptic number.

13220111111 is a deficient number, since it is larger than the sum of its proper divisors (82431769).

13220111111 is an equidigital number, since it uses as much as digits as its factorization.

13220111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77593.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 13220111111 its reverse (11111102231), we get a palindrome (24331213342).

The spelling of 13220111111 in words is "thirteen billion, two hundred twenty million, one hundred eleven thousand, one hundred eleven".