1244027413021 has 2 divisors, whose sum is σ = 1244027413022. Its totient is φ = 1244027413020.

The previous prime is 1244027412899. The next prime is 1244027413033. The reversal of 1244027413021 is 1203147204421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 711914062500 + 532113350521 = 843750^2 + 729461^2 .

It is an emirp because it is prime and its reverse (1203147204421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1244027413021 - 2⁷ = 1244027412893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1244021413021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622013706510 + 622013706511.

It is an arithmetic number, because the mean of its divisors is an integer number (622013706511).

Almost surely, 2^{1244027413021} is an apocalyptic number.

It is an amenable number.

1244027413021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244027413021 is an equidigital number, since it uses as much as digits as its factorization.

1244027413021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 31.

The spelling of 1244027413021 in words is "one trillion, two hundred forty-four billion, twenty-seven million, four hundred thirteen thousand, twenty-one".