12111212322 has 24 divisors (see below), whose sum is σ = 28626502320. Its totient is φ = 3670064280.

The previous prime is 12111212317. The next prime is 12111212359. The reversal of 12111212322 is 22321211121.

12111212322 is a `hidden beast` number, since 121 + 11 + 212 + 322 = 666.

12111212322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 12111212295 and 12111212304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30583672 + ... + 30584067.

It is an arithmetic number, because the mean of its divisors is an integer number (1192770930).

Almost surely, 2^12111212322 is an apocalyptic number.

12111212322 is an abundant number, since it is smaller than the sum of its proper divisors (16515289998).

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

12111212322 is a wasteful number, since it uses less digits than its factorization.

12111212322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61167758 (or 61167755 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

Adding to 12111212322 its reverse (22321211121), we get a palindrome (34432423443).

The spelling of 12111212322 in words is "twelve billion, one hundred eleven million, two hundred twelve thousand, three hundred twenty-two".