12111222312232 has 32 divisors (see below), whose sum is σ = 24630785703720. Its totient is φ = 5560389007360.

The previous prime is 12111222312221. The next prime is 12111222312239. The reversal of 12111222312232 is 23221322211121.

It can be written as a sum of positive squares in 4 ways, for example, as 11792726874916 + 318495437316 = 3434054^2 + 564354^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12111222312197 and 12111222312206.

It is not an unprimeable number, because it can be changed into a prime (12111222312239) 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, 1086007903 + ... + 1086019054.

Almost surely, 2^{12111222312232} is an apocalyptic number.

It is an amenable number.

12111222312232 is an abundant number, since it is smaller than the sum of its proper divisors (12519563391488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12111222312232 is a wasteful number, since it uses less digits than its factorization.

12111222312232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2172027021 (or 2172027017 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

Adding to 12111222312232 its reverse (23221322211121), we get a palindrome (35332544523353).

The spelling of 12111222312232 in words is "twelve trillion, one hundred eleven billion, two hundred twenty-two million, three hundred twelve thousand, two hundred thirty-two".