1002221331323 has 4 divisors (see below), whose sum is σ = 1002258753048. Its totient is φ = 1002183909600.

The previous prime is 1002221331313. The next prime is 1002221331343. The reversal of 1002221331323 is 3231331222001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002221331323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002221331313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18670661 + ... + 18724262.

It is an arithmetic number, because the mean of its divisors is an integer number (250564688262).

Almost surely, 2^{1002221331323} is an apocalyptic number.

1002221331323 is a deficient number, since it is larger than the sum of its proper divisors (37421725).

1002221331323 is an equidigital number, since it uses as much as digits as its factorization.

1002221331323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37421724.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 1002221331323 its reverse (3231331222001), we get a palindrome (4233552553324).

The spelling of 1002221331323 in words is "one trillion, two billion, two hundred twenty-one million, three hundred thirty-one thousand, three hundred twenty-three".