12311222133 has 8 divisors (see below), whose sum is σ = 18759957568. Its totient is φ = 7034984064.

The previous prime is 12311222123. The next prime is 12311222137. The reversal of 12311222133 is 33122211321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12311222133 - 2¹⁶ = 12311156597 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 586248673 = 12311222133 / (1 + 2 + 3 + 1 + 1 + 2 + 2 + 2 + 1 + 3 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12311222137) 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, 293124316 + ... + 293124357.

It is an arithmetic number, because the mean of its divisors is an integer number (2344994696).

Almost surely, 2^12311222133 is an apocalyptic number.

It is an amenable number.

12311222133 is a deficient number, since it is larger than the sum of its proper divisors (6448735435).

12311222133 is an equidigital number, since it uses as much as digits as its factorization.

12311222133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586248683.

The product of its digits is 432, while the sum is 21.

Adding to 12311222133 its reverse (33122211321), we get a palindrome (45433433454).

The spelling of 12311222133 in words is "twelve billion, three hundred eleven million, two hundred twenty-two thousand, one hundred thirty-three".