20144204043121 has 8 divisors (see below), whose sum is σ = 20363197788000. Its totient is φ = 19925924797632.

The previous prime is 20144204043101. The next prime is 20144204043127. The reversal of 20144204043121 is 12134040244102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20144204043121 - 2²⁷ = 20144069825393 is a prime.

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 20144204043121.

It is not an unprimeable number, because it can be changed into a prime (20144204043127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178568155 + ... + 178680928.

It is an arithmetic number, because the mean of its divisors is an integer number (2545399723500).

Almost surely, 2^{20144204043121} is an apocalyptic number.

It is an amenable number.

20144204043121 is a deficient number, since it is larger than the sum of its proper divisors (218993744879).

20144204043121 is a wasteful number, since it uses less digits than its factorization.

20144204043121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357249695.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 20144204043121 its reverse (12134040244102), we get a palindrome (32278244287223).

The spelling of 20144204043121 in words is "twenty trillion, one hundred forty-four billion, two hundred four million, forty-three thousand, one hundred twenty-one".