14444142121 has 4 divisors (see below), whose sum is σ = 14495545044. Its totient is φ = 14392739200.

The previous prime is 14444142113. The next prime is 14444142149. The reversal of 14444142121 is 12124144441.

14444142121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7020596521 + 7423545600 = 83789^2 + 86160^2 .

It is a cyclic number.

It is not a de Polignac number, because 14444142121 - 2³ = 14444142113 is a prime.

It is a super-2 number, since 2×14444142121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 14444142121.

It is not an unprimeable number, because it can be changed into a prime (14444142151) 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 3 ways as a sum of consecutive naturals, for example, 25701040 + ... + 25701601.

It is an arithmetic number, because the mean of its divisors is an integer number (3623886261).

Almost surely, 2^14444142121 is an apocalyptic number.

It is an amenable number.

14444142121 is a deficient number, since it is larger than the sum of its proper divisors (51402923).

14444142121 is an equidigital number, since it uses as much as digits as its factorization.

14444142121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51402922.

The product of its digits is 4096, while the sum is 28.

Adding to 14444142121 its reverse (12124144441), we get a palindrome (26568286562).

The spelling of 14444142121 in words is "fourteen billion, four hundred forty-four million, one hundred forty-two thousand, one hundred twenty-one".