12130312111 has 4 divisors (see below), whose sum is σ = 12426173424. Its totient is φ = 11834450800.

The previous prime is 12130312099. The next prime is 12130312123. The reversal of 12130312111 is 11121303121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11121303121 = 257 ⋅43273553.

It is an interprime number because it is at equal distance from previous prime (12130312099) and next prime (12130312123).

It is a cyclic number.

It is not a de Polignac number, because 12130312111 - 2²³ = 12121923503 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 (12130315111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147930595 + ... + 147930676.

It is an arithmetic number, because the mean of its divisors is an integer number (3106543356).

Almost surely, 2^12130312111 is an apocalyptic number.

12130312111 is a deficient number, since it is larger than the sum of its proper divisors (295861313).

12130312111 is an equidigital number, since it uses as much as digits as its factorization.

12130312111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295861312.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 12130312111 its reverse (11121303121), we get a palindrome (23251615232).

It can be divided in two parts, 121303121 and 11, that multiplied together give a palindrome (1334334331).

The spelling of 12130312111 in words is "twelve billion, one hundred thirty million, three hundred twelve thousand, one hundred eleven".