12320002422 has 256 divisors, whose sum is σ = 34502307840. Its totient is φ = 3172608000.

The previous prime is 12320002403. The next prime is 12320002469. The reversal of 12320002422 is 22420002321.

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 = 12320002395 and 12320002404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 51120222 + ... + 51120462.

It is an arithmetic number, because the mean of its divisors is an integer number (134774640).

Almost surely, 2^12320002422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12320002422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17251153920).

12320002422 is an abundant number, since it is smaller than the sum of its proper divisors (22182305418).

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

12320002422 is a wasteful number, since it uses less digits than its factorization.

12320002422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476 (or 470 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 12320002422 its reverse (22420002321), we get a palindrome (34740004743).

The spelling of 12320002422 in words is "twelve billion, three hundred twenty million, two thousand, four hundred twenty-two".