12321003420 has 96 divisors (see below), whose sum is σ = 41816759040. Its totient is φ = 2986908480.

The previous prime is 12321003407. The next prime is 12321003427. The reversal of 12321003420 is 2430012321.

12321003420 is a `hidden beast` number, since 1 + 2 + 321 + 0 + 0 + 342 + 0 = 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 = 12321003393 and 12321003402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321003427) 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, 1031182 + ... + 1043061.

It is an arithmetic number, because the mean of its divisors is an integer number (435591240).

Almost surely, 2^12321003420 is an apocalyptic number.

12321003420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12321003420 is an abundant number, since it is smaller than the sum of its proper divisors (29495755620).

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

12321003420 is a wasteful number, since it uses less digits than its factorization.

12321003420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2074272 (or 2074264 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 12321003420 its reverse (2430012321), we get a palindrome (14751015741).

The spelling of 12321003420 in words is "twelve billion, three hundred twenty-one million, three thousand, four hundred twenty".