4144243203121 has 16 divisors (see below), whose sum is σ = 4742986413568. Its totient is φ = 3547177920000.

The previous prime is 4144243203119. The next prime is 4144243203143. The reversal of 4144243203121 is 1213023424414.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 4144243203121 - 2¹ = 4144243203119 is a prime.

It is a super-2 number, since 2×4144243203121² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4144243203521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80474701 + ... + 80526181.

It is an arithmetic number, because the mean of its divisors is an integer number (296436650848).

Almost surely, 2^{4144243203121} is an apocalyptic number.

It is an amenable number.

4144243203121 is a deficient number, since it is larger than the sum of its proper divisors (598743210447).

4144243203121 is a wasteful number, since it uses less digits than its factorization.

4144243203121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67552.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 4144243203121 its reverse (1213023424414), we get a palindrome (5357266627535).

The spelling of 4144243203121 in words is "four trillion, one hundred forty-four billion, two hundred forty-three million, two hundred three thousand, one hundred twenty-one".