13420011111 has 32 divisors (see below), whose sum is σ = 20069457408. Its totient is φ = 7922033280.

The previous prime is 13420011109. The next prime is 13420011149. The reversal of 13420011111 is 11111002431.

It is not a de Polignac number, because 13420011111 - 2¹ = 13420011109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13420011211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36960 + ... + 167946.

It is an arithmetic number, because the mean of its divisors is an integer number (627170544).

Almost surely, 2^13420011111 is an apocalyptic number.

13420011111 is a deficient number, since it is larger than the sum of its proper divisors (6649446297).

13420011111 is a wasteful number, since it uses less digits than its factorization.

13420011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131111.

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

Adding to 13420011111 its reverse (11111002431), we get a palindrome (24531013542).

The spelling of 13420011111 in words is "thirteen billion, four hundred twenty million, eleven thousand, one hundred eleven".