1020321323211 has 4 divisors (see below), whose sum is σ = 1360428430952. Its totient is φ = 680214215472.

The previous prime is 1020321323143. The next prime is 1020321323257. The reversal of 1020321323211 is 1123231230201.

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

It is not a de Polignac number, because 1020321323211 - 2⁷ = 1020321323083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020321322211) 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, 170053553866 + ... + 170053553871.

It is an arithmetic number, because the mean of its divisors is an integer number (340107107738).

Almost surely, 2^{1020321323211} is an apocalyptic number.

1020321323211 is a deficient number, since it is larger than the sum of its proper divisors (340107107741).

1020321323211 is an equidigital number, since it uses as much as digits as its factorization.

1020321323211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340107107740.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1020321323211 its reverse (1123231230201), we get a palindrome (2143552553412).

The spelling of 1020321323211 in words is "one trillion, twenty billion, three hundred twenty-one million, three hundred twenty-three thousand, two hundred eleven".