13120111 has 2 divisors, whose sum is σ = 13120112. Its totient is φ = 13120110.

The previous prime is 13120103. The next prime is 13120139. The reversal of 13120111 is 11102131.

13120111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (11102131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13120111 - 2³ = 13120103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13120181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6560055 + 6560056.

It is an arithmetic number, because the mean of its divisors is an integer number (6560056).

Almost surely, 2^13120111 is an apocalyptic number.

13120111 is a deficient number, since it is larger than the sum of its proper divisors (1).

13120111 is an equidigital number, since it uses as much as digits as its factorization.

13120111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 13120111 is about 3622.1693775968. The cubic root of 13120111 is about 235.8554067361.

Adding to 13120111 its reverse (11102131), we get a palindrome (24222242).

It can be divided in two parts, 13120 and 111, that added together give a palindrome (13231).

The spelling of 13120111 in words is "thirteen million, one hundred twenty thousand, one hundred eleven".