1021333321011 has 4 divisors (see below), whose sum is σ = 1361777761352. Its totient is φ = 680888880672.

The previous prime is 1021333321009. The next prime is 1021333321051. The reversal of 1021333321011 is 1101233331201.

It is a happy number.

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

It is not a de Polignac number, because 1021333321011 - 2¹ = 1021333321009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021333321051) 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, 170222220166 + ... + 170222220171.

It is an arithmetic number, because the mean of its divisors is an integer number (340444440338).

Almost surely, 2^{1021333321011} is an apocalyptic number.

1021333321011 is a deficient number, since it is larger than the sum of its proper divisors (340444440341).

1021333321011 is an equidigital number, since it uses as much as digits as its factorization.

1021333321011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340444440340.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1021333321011 its reverse (1101233331201), we get a palindrome (2122566652212).

The spelling of 1021333321011 in words is "one trillion, twenty-one billion, three hundred thirty-three million, three hundred twenty-one thousand, eleven".