12111231479 has 2 divisors, whose sum is σ = 12111231480. Its totient is φ = 12111231478.

The previous prime is 12111231439. The next prime is 12111231487. The reversal of 12111231479 is 97413211121.

It is a strong prime.

It is an emirp because it is prime and its reverse (97413211121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12111231479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12111231439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055615739 + 6055615740.

It is an arithmetic number, because the mean of its divisors is an integer number (6055615740).

Almost surely, 2^12111231479 is an apocalyptic number.

12111231479 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111231479 is an equidigital number, since it uses as much as digits as its factorization.

12111231479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 32.

The spelling of 12111231479 in words is "twelve billion, one hundred eleven million, two hundred thirty-one thousand, four hundred seventy-nine".