1002244041221 has 2 divisors, whose sum is σ = 1002244041222. Its totient is φ = 1002244041220.

The previous prime is 1002244041199. The next prime is 1002244041349. The reversal of 1002244041221 is 1221404422001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 961998064225 + 40245976996 = 980815^2 + 200614^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002244041221 - 2⁶ = 1002244041157 is a prime.

It is a super-4 number, since 4×1002244041221⁴ (a number of 49 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002244041521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501122020610 + 501122020611.

It is an arithmetic number, because the mean of its divisors is an integer number (501122020611).

Almost surely, 2^{1002244041221} is an apocalyptic number.

It is an amenable number.

1002244041221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002244041221 is an equidigital number, since it uses as much as digits as its factorization.

1002244041221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 1002244041221 its reverse (1221404422001), we get a palindrome (2223648463222).

The spelling of 1002244041221 in words is "one trillion, two billion, two hundred forty-four million, forty-one thousand, two hundred twenty-one".