444444214121 has 4 divisors (see below), whose sum is σ = 444447354000. Its totient is φ = 444441074244.

The previous prime is 444444214091. The next prime is 444444214127. The reversal of 444444214121 is 121412444444.

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 a de Polignac number, because none of the positive numbers 2^k-444444214121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444444214127) 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, 1347071 + ... + 1644228.

It is an arithmetic number, because the mean of its divisors is an integer number (111111838500).

Almost surely, 2^444444214121 is an apocalyptic number.

It is an amenable number.

444444214121 is a deficient number, since it is larger than the sum of its proper divisors (3139879).

444444214121 is a wasteful number, since it uses less digits than its factorization.

444444214121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3139878.

The product of its digits is 65536, while the sum is 35.

Adding to 444444214121 its reverse (121412444444), we get a palindrome (565856658565).

The spelling of 444444214121 in words is "four hundred forty-four billion, four hundred forty-four million, two hundred fourteen thousand, one hundred twenty-one".