12323404422 has 64 divisors (see below), whose sum is σ = 31461580800. Its totient is φ = 3502517760.

The previous prime is 12323404417. The next prime is 12323404433. The reversal of 12323404422 is 22440432321.

12323404422 is a `hidden beast` number, since 1 + 2 + 3 + 234 + 0 + 4 + 422 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13147 + ... + 157542.

It is an arithmetic number, because the mean of its divisors is an integer number (491587200).

Almost surely, 2^12323404422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12323404422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15730790400).

12323404422 is an abundant number, since it is smaller than the sum of its proper divisors (19138176378).

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

12323404422 is a wasteful number, since it uses less digits than its factorization.

12323404422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170898 (or 170892 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 12323404422 its reverse (22440432321), we get a palindrome (34763836743).

The spelling of 12323404422 in words is "twelve billion, three hundred twenty-three million, four hundred four thousand, four hundred twenty-two".