12002320422 has 64 divisors (see below), whose sum is σ = 27634737600. Its totient is φ = 3856769280.

The previous prime is 12002320417. The next prime is 12002320423. The reversal of 12002320422 is 22402320021.

12002320422 is a `hidden beast` number, since 1 + 200 + 23 + 20 + 422 = 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 = 12002320395 and 12002320404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002320423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1054522 + ... + 1065842.

It is an arithmetic number, because the mean of its divisors is an integer number (431792775).

Almost surely, 2^12002320422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12002320422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13817368800).

12002320422 is an abundant number, since it is smaller than the sum of its proper divisors (15632417178).

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

12002320422 is a wasteful number, since it uses less digits than its factorization.

12002320422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12038 (or 12032 counting only the distinct ones).

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

Adding to 12002320422 its reverse (22402320021), we get a palindrome (34404640443).

The spelling of 12002320422 in words is "twelve billion, two million, three hundred twenty thousand, four hundred twenty-two".