12140911 has 4 divisors (see below), whose sum is σ = 12165552. Its totient is φ = 12116272.

The previous prime is 12140903. The next prime is 12140923. The reversal of 12140911 is 11904121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11904121 = 37 ⋅321733.

It is a cyclic number.

It is not a de Polignac number, because 12140911 - 2³ = 12140903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12140951) 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 3 ways as a sum of consecutive naturals, for example, 11566 + ... + 12571.

It is an arithmetic number, because the mean of its divisors is an integer number (3041388).

Almost surely, 2^12140911 is an apocalyptic number.

12140911 is a deficient number, since it is larger than the sum of its proper divisors (24641).

12140911 is an equidigital number, since it uses as much as digits as its factorization.

12140911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24640.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 12140911 is about 3484.3810067213. The cubic root of 12140911 is about 229.8354904266.

It can be divided in two parts, 121 and 40911, that multiplied together give a triangular number (4950231 = T₃₁₄₆).

The spelling of 12140911 in words is "twelve million, one hundred forty thousand, nine hundred eleven".