444121043343121 has 2 divisors, whose sum is σ = 444121043343122. Its totient is φ = 444121043343120.

The previous prime is 444121043343079. The next prime is 444121043343149. The reversal of 444121043343121 is 121343340121444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 363741946880400 + 80379096462721 = 19072020^2 + 8965439^2 .

It is a cyclic number.

It is not a de Polignac number, because 444121043343121 - 2³⁹ = 443571287529233 is a prime.

It is a super-2 number, since 2×444121043343121² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (444121043343821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222060521671560 + 222060521671561.

It is an arithmetic number, because the mean of its divisors is an integer number (222060521671561).

Almost surely, 2^{444121043343121} is an apocalyptic number.

It is an amenable number.

444121043343121 is a deficient number, since it is larger than the sum of its proper divisors (1).

444121043343121 is an equidigital number, since it uses as much as digits as its factorization.

444121043343121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 110592, while the sum is 37.

Adding to 444121043343121 its reverse (121343340121444), we get a palindrome (565464383464565).

The spelling of 444121043343121 in words is "four hundred forty-four trillion, one hundred twenty-one billion, forty-three million, three hundred forty-three thousand, one hundred twenty-one".