4144421121 has 4 divisors (see below), whose sum is σ = 5525894832. Its totient is φ = 2762947412.

The previous prime is 4144421111. The next prime is 4144421123. The reversal of 4144421121 is 1211244414.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4144421121 - 2¹¹ = 4144419073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4144421091 and 4144421100.

It is not an unprimeable number, because it can be changed into a prime (4144421123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 690736851 + ... + 690736856.

It is an arithmetic number, because the mean of its divisors is an integer number (1381473708).

Almost surely, 2^4144421121 is an apocalyptic number.

It is an amenable number.

4144421121 is a deficient number, since it is larger than the sum of its proper divisors (1381473711).

4144421121 is a wasteful number, since it uses less digits than its factorization.

4144421121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381473710.

The product of its digits is 1024, while the sum is 24.

The square root of 4144421121 is about 64377.1785728452. The cubic root of 4144421121 is about 1606.2801510265.

Adding to 4144421121 its reverse (1211244414), we get a palindrome (5355665535).

The spelling of 4144421121 in words is "four billion, one hundred forty-four million, four hundred twenty-one thousand, one hundred twenty-one".