1002444221309 has 2 divisors, whose sum is σ = 1002444221310. Its totient is φ = 1002444221308.

The previous prime is 1002444221279. The next prime is 1002444221347. The reversal of 1002444221309 is 9031224442001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 682028222500 + 320415998809 = 825850^2 + 566053^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002444221309 - 2³² = 998149254013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002444229309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501222110654 + 501222110655.

It is an arithmetic number, because the mean of its divisors is an integer number (501222110655).

Almost surely, 2^{1002444221309} is an apocalyptic number.

It is an amenable number.

1002444221309 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002444221309 is an equidigital number, since it uses as much as digits as its factorization.

1002444221309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 1002444221309 in words is "one trillion, two billion, four hundred forty-four million, two hundred twenty-one thousand, three hundred nine".