1021320200311 has 4 divisors (see below), whose sum is σ = 1023892795672. Its totient is φ = 1018747604952.

The previous prime is 1021320200239. The next prime is 1021320200359. The reversal of 1021320200311 is 1130020231201.

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

It is a cyclic number.

It is not a de Polignac number, because 1021320200311 - 2¹¹ = 1021320198263 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 (1021320200371) 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, 1286297085 + ... + 1286297878.

It is an arithmetic number, because the mean of its divisors is an integer number (255973198918).

Almost surely, 2^{1021320200311} is an apocalyptic number.

1021320200311 is a deficient number, since it is larger than the sum of its proper divisors (2572595361).

1021320200311 is an equidigital number, since it uses as much as digits as its factorization.

1021320200311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2572595360.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1021320200311 its reverse (1130020231201), we get a palindrome (2151340431512).

The spelling of 1021320200311 in words is "one trillion, twenty-one billion, three hundred twenty million, two hundred thousand, three hundred eleven".