14355125213221 has 24 divisors (see below), whose sum is σ = 16368469667520. Its totient is φ = 12548835052416.

The previous prime is 14355125213197. The next prime is 14355125213239. The reversal of 14355125213221 is 12231252155341.

It is a happy number.

It is not a de Polignac number, because 14355125213221 - 2²¹ = 14355123116069 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 (14355128213221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7887520 + ... + 9535366.

It is an arithmetic number, because the mean of its divisors is an integer number (682019569480).

Almost surely, 2^{14355125213221} is an apocalyptic number.

It is an amenable number.

14355125213221 is a deficient number, since it is larger than the sum of its proper divisors (2013344454299).

14355125213221 is a wasteful number, since it uses less digits than its factorization.

14355125213221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650605 (or 1650592 counting only the distinct ones).

The product of its digits is 72000, while the sum is 37.

Adding to 14355125213221 its reverse (12231252155341), we get a palindrome (26586377368562).

The spelling of 14355125213221 in words is "fourteen trillion, three hundred fifty-five billion, one hundred twenty-five million, two hundred thirteen thousand, two hundred twenty-one".