13125111 has 16 divisors (see below), whose sum is σ = 18364416. Its totient is φ = 8322336.

The previous prime is 13125109. The next prime is 13125113. The reversal of 13125111 is 11152131.

It is an interprime number because it is at equal distance from previous prime (13125109) and next prime (13125113).

It is not a de Polignac number, because 13125111 - 2¹ = 13125109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13125113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14961 + ... + 15813.

It is an arithmetic number, because the mean of its divisors is an integer number (1147776).

Almost surely, 2^13125111 is an apocalyptic number.

13125111 is a deficient number, since it is larger than the sum of its proper divisors (5239305).

13125111 is a wasteful number, since it uses less digits than its factorization.

13125111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102.

The product of its digits is 30, while the sum is 15.

The square root of 13125111 is about 3622.8595059704. The cubic root of 13125111 is about 235.8853639842.

Adding to 13125111 its sum of digits (15), we get a triangular number (13125126 = T₅₁₂₃).

Adding to 13125111 its reverse (11152131), we get a palindrome (24277242).

The spelling of 13125111 in words is "thirteen million, one hundred twenty-five thousand, one hundred eleven".