444210121 has 2 divisors, whose sum is σ = 444210122. Its totient is φ = 444210120.

The previous prime is 444210103. The next prime is 444210131. The reversal of 444210121 is 121012444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 439321600 + 4888521 = 20960^2 + 2211^2 .

It is a cyclic number.

It is not a de Polignac number, because 444210121 - 2⁷ = 444209993 is a prime.

It is not a weakly prime, because it can be changed into another prime (444210131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222105060 + 222105061.

It is an arithmetic number, because the mean of its divisors is an integer number (222105061).

Almost surely, 2^444210121 is an apocalyptic number.

It is an amenable number.

444210121 is a deficient number, since it is larger than the sum of its proper divisors (1).

444210121 is an equidigital number, since it uses as much as digits as its factorization.

444210121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 444210121 is about 21076.2928666310. The cubic root of 444210121 is about 763.0086880999.

Adding to 444210121 its reverse (121012444), we get a palindrome (565222565).

The spelling of 444210121 in words is "four hundred forty-four million, two hundred ten thousand, one hundred twenty-one".