12321400321 has 8 divisors (see below), whose sum is σ = 12418030944. Its totient is φ = 12224808960.

The previous prime is 12321400313. The next prime is 12321400327. The reversal of 12321400321 is 12300412321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12321400321 - 2³ = 12321400313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12321400327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1140481 + ... + 1151233.

It is an arithmetic number, because the mean of its divisors is an integer number (1552253868).

Almost surely, 2^12321400321 is an apocalyptic number.

It is an amenable number.

12321400321 is a deficient number, since it is larger than the sum of its proper divisors (96630623).

12321400321 is a wasteful number, since it uses less digits than its factorization.

12321400321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19631.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12321400321 its reverse (12300412321), we get a palindrome (24621812642).

The spelling of 12321400321 in words is "twelve billion, three hundred twenty-one million, four hundred thousand, three hundred twenty-one".