12320111322 has 48 divisors (see below), whose sum is σ = 27924698880. Its totient is φ = 3918204576.

The previous prime is 12320111311. The next prime is 12320111341. The reversal of 12320111322 is 22311102321.

12320111322 is a `hidden beast` number, since 1 + 232 + 0 + 111 + 322 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 12320111295 and 12320111304.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126879 + ... + 201837.

It is an arithmetic number, because the mean of its divisors is an integer number (581764560).

Almost surely, 2^12320111322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12320111322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13962349440).

12320111322 is an abundant number, since it is smaller than the sum of its proper divisors (15604587558).

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

12320111322 is a wasteful number, since it uses less digits than its factorization.

12320111322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75387 (or 75384 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12320111322 its reverse (22311102321), we get a palindrome (34631213643).

Subtracting 12320111322 from its reverse (22311102321), we obtain a palindrome (9990990999).

The spelling of 12320111322 in words is "twelve billion, three hundred twenty million, one hundred eleven thousand, three hundred twenty-two".