1244440444421 has 2 divisors, whose sum is σ = 1244440444422. Its totient is φ = 1244440444420.

The previous prime is 1244440444397. The next prime is 1244440444469.

1244440444421 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1216639884196 + 27800560225 = 1103014^2 + 166735^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 1244440444421 - 2³⁴ = 1227260575237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1244440446421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622220222210 + 622220222211.

It is an arithmetic number, because the mean of its divisors is an integer number (622220222211).

Almost surely, 2^{1244440444421} is an apocalyptic number.

It is an amenable number.

1244440444421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244440444421 is an equidigital number, since it uses as much as digits as its factorization.

1244440444421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 262144, while the sum is 38.

It can be divided in two parts, 1244440 and 444421, that added together give a palindrome (1688861).

The spelling of 1244440444421 in words is "one trillion, two hundred forty-four billion, four hundred forty million, four hundred forty-four thousand, four hundred twenty-one".