14145443331221 has 32 divisors (see below), whose sum is σ = 14666091686400. Its totient is φ = 13637639208960.

The previous prime is 14145443331209. The next prime is 14145443331277. The reversal of 14145443331221 is 12213334454141.

It is a cyclic number.

It is not a de Polignac number, because 14145443331221 - 2¹⁸ = 14145443069077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14145443331281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 489091841 + ... + 489120761.

It is an arithmetic number, because the mean of its divisors is an integer number (458315365200).

Almost surely, 2^{14145443331221} is an apocalyptic number.

It is an amenable number.

14145443331221 is a deficient number, since it is larger than the sum of its proper divisors (520648355179).

14145443331221 is an equidigital number, since it uses as much as digits as its factorization.

14145443331221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29949.

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

Adding to 14145443331221 its reverse (12213334454141), we get a palindrome (26358777785362).

The spelling of 14145443331221 in words is "fourteen trillion, one hundred forty-five billion, four hundred forty-three million, three hundred thirty-one thousand, two hundred twenty-one".