444121121340121 has 16 divisors (see below), whose sum is σ = 456446361404880. Its totient is φ = 431812929104640.

The previous prime is 444121121340119. The next prime is 444121121340137. The reversal of 444121121340121 is 121043121121444.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 57625770874896 + 386495350465225 = 7591164^2 + 19659485^2 .

It is a cyclic number.

It is not a de Polignac number, because 444121121340121 - 2¹ = 444121121340119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (444121121340101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313430251 + ... + 314844031.

It is an arithmetic number, because the mean of its divisors is an integer number (28527897587805).

Almost surely, 2^{444121121340121} is an apocalyptic number.

It is an amenable number.

444121121340121 is a deficient number, since it is larger than the sum of its proper divisors (12325240064759).

444121121340121 is a wasteful number, since it uses less digits than its factorization.

444121121340121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419804.

The product of its (nonzero) digits is 6144, while the sum is 31.

Adding to 444121121340121 its reverse (121043121121444), we get a palindrome (565164242461565).

The spelling of 444121121340121 in words is "four hundred forty-four trillion, one hundred twenty-one billion, one hundred twenty-one million, three hundred forty thousand, one hundred twenty-one".