14420243122121 has 4 divisors (see below), whose sum is σ = 14771956369044. Its totient is φ = 14068529875200.

The previous prime is 14420243122111. The next prime is 14420243122139. The reversal of 14420243122121 is 12122134202441.

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 736635975625 + 13683607146496 = 858275^2 + 3699136^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14420243122121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14420243122111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175856623400 + ... + 175856623481.

It is an arithmetic number, because the mean of its divisors is an integer number (3692989092261).

Almost surely, 2^{14420243122121} is an apocalyptic number.

It is an amenable number.

14420243122121 is a deficient number, since it is larger than the sum of its proper divisors (351713246923).

14420243122121 is an equidigital number, since it uses as much as digits as its factorization.

14420243122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351713246922.

The product of its (nonzero) digits is 6144, while the sum is 29.

Adding to 14420243122121 its reverse (12122134202441), we get a palindrome (26542377324562).

The spelling of 14420243122121 in words is "fourteen trillion, four hundred twenty billion, two hundred forty-three million, one hundred twenty-two thousand, one hundred twenty-one".