12111814 has 16 divisors (see below), whose sum is σ = 21344400. Its totient is φ = 5081760.

The previous prime is 12111811. The next prime is 12111817. The reversal of 12111814 is 41811121.

It is an interprime number because it is at equal distance from previous prime (12111811) and next prime (12111817).

It is a junction number, because it is equal to n+sod(n) for n = 12111791 and 12111800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20889 + ... + 21460.

It is an arithmetic number, because the mean of its divisors is an integer number (1334025).

Almost surely, 2^12111814 is an apocalyptic number.

12111814 is a deficient number, since it is larger than the sum of its proper divisors (9232586).

12111814 is a wasteful number, since it uses less digits than its factorization.

12111814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42375.

The product of its digits is 64, while the sum is 19.

The square root of 12111814 is about 3480.2031549897. The cubic root of 12111814 is about 229.6517350548.

Adding to 12111814 its reverse (41811121), we get a palindrome (53922935).

It can be divided in two parts, 1211 and 1814, that added together give a square (3025 = 55²).

The spelling of 12111814 in words is "twelve million, one hundred eleven thousand, eight hundred fourteen".