1002340443221 has 4 divisors (see below), whose sum is σ = 1079443554252. Its totient is φ = 925237332192.

The previous prime is 1002340443191. The next prime is 1002340443257. The reversal of 1002340443221 is 1223440432001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48907322500 + 953433120721 = 221150^2 + 976439^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002340443221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002340443521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38551555496 + ... + 38551555521.

It is an arithmetic number, because the mean of its divisors is an integer number (269860888563).

Almost surely, 2^{1002340443221} is an apocalyptic number.

It is an amenable number.

1002340443221 is a deficient number, since it is larger than the sum of its proper divisors (77103111031).

1002340443221 is an equidigital number, since it uses as much as digits as its factorization.

1002340443221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77103111030.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 1002340443221 its reverse (1223440432001), we get a palindrome (2225780875222).

The spelling of 1002340443221 in words is "one trillion, two billion, three hundred forty million, four hundred forty-three thousand, two hundred twenty-one".