12321206143454 has 64 divisors (see below), whose sum is σ = 21088524226560. Its totient is φ = 5352069790080.

The previous prime is 12321206143453. The next prime is 12321206143523. The reversal of 12321206143454 is 45434160212321.

12321206143454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321206143453) 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, 518928707 + ... + 518952449.

It is an arithmetic number, because the mean of its divisors is an integer number (329508191040).

Almost surely, 2^{12321206143454} is an apocalyptic number.

12321206143454 is a deficient number, since it is larger than the sum of its proper divisors (8767318083106).

12321206143454 is a wasteful number, since it uses less digits than its factorization.

12321206143454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30625.

The product of its (nonzero) digits is 138240, while the sum is 38.

Adding to 12321206143454 its reverse (45434160212321), we get a palindrome (57755366355775).

The spelling of 12321206143454 in words is "twelve trillion, three hundred twenty-one billion, two hundred six million, one hundred forty-three thousand, four hundred fifty-four".