13421314400321 has 4 divisors (see below), whose sum is σ = 13450427881044. Its totient is φ = 13392200919600.

The previous prime is 13421314400311. The next prime is 13421314400339. The reversal of 13421314400321 is 12300441312431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8886271570225 + 4535042830096 = 2980985^2 + 2129564^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13421314400321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13421314400311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14556739670 + ... + 14556740591.

It is an arithmetic number, because the mean of its divisors is an integer number (3362606970261).

Almost surely, 2^{13421314400321} is an apocalyptic number.

It is an amenable number.

13421314400321 is a deficient number, since it is larger than the sum of its proper divisors (29113480723).

13421314400321 is an equidigital number, since it uses as much as digits as its factorization.

13421314400321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29113480722.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 13421314400321 its reverse (12300441312431), we get a palindrome (25721755712752).

The spelling of 13421314400321 in words is "thirteen trillion, four hundred twenty-one billion, three hundred fourteen million, four hundred thousand, three hundred twenty-one".