1224111311 has 12 divisors (see below), whose sum is σ = 1244090232. Its totient is φ = 1204416864.

The previous prime is 1224111289. The next prime is 1224111319. The reversal of 1224111311 is 1131114221.

It is not a de Polignac number, because 1224111311 - 2¹⁰ = 1224110287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1224111311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224111319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2340296 + ... + 2340818.

It is an arithmetic number, because the mean of its divisors is an integer number (103674186).

Almost surely, 2^1224111311 is an apocalyptic number.

1224111311 is a deficient number, since it is larger than the sum of its proper divisors (19978921).

1224111311 is an equidigital number, since it uses as much as digits as its factorization.

1224111311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938 (or 829 counting only the distinct ones).

The product of its digits is 48, while the sum is 17.

The square root of 1224111311 is about 34987.3021394905. The cubic root of 1224111311 is about 1069.7286734521.

Adding to 1224111311 its reverse (1131114221), we get a palindrome (2355225532).

The spelling of 1224111311 in words is "one billion, two hundred twenty-four million, one hundred eleven thousand, three hundred eleven".