1002221110321 has 4 divisors (see below), whose sum is σ = 1002224289600. Its totient is φ = 1002217931044.

The previous prime is 1002221110301. The next prime is 1002221110327. The reversal of 1002221110321 is 1230111222001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1002221110321 - 2²⁷ = 1002086892593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002221110295 and 1002221110304.

It is not an unprimeable number, because it can be changed into a prime (1002221110327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1057381 + ... + 1767058.

It is an arithmetic number, because the mean of its divisors is an integer number (250556072400).

Almost surely, 2^{1002221110321} is an apocalyptic number.

It is an amenable number.

1002221110321 is a deficient number, since it is larger than the sum of its proper divisors (3179279).

1002221110321 is an equidigital number, since it uses as much as digits as its factorization.

1002221110321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3179278.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1002221110321 its reverse (1230111222001), we get a palindrome (2232332332322).

The spelling of 1002221110321 in words is "one trillion, two billion, two hundred twenty-one million, one hundred ten thousand, three hundred twenty-one".