1021341020321 has 4 divisors (see below), whose sum is σ = 1021367425092. Its totient is φ = 1021314615552.

The previous prime is 1021341020311. The next prime is 1021341020347. The reversal of 1021341020321 is 1230201431201.

1021341020321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 65318580625 + 956022439696 = 255575^2 + 977764^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021341020321 - 2⁶ = 1021341020257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021341020293 and 1021341020302.

It is not an unprimeable number, because it can be changed into a prime (1021341020311) 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, 13144280 + ... + 13221753.

It is an arithmetic number, because the mean of its divisors is an integer number (255341856273).

Almost surely, 2^{1021341020321} is an apocalyptic number.

It is an amenable number.

1021341020321 is a deficient number, since it is larger than the sum of its proper divisors (26404771).

1021341020321 is an equidigital number, since it uses as much as digits as its factorization.

1021341020321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26404770.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1021341020321 its reverse (1230201431201), we get a palindrome (2251542451522).

The spelling of 1021341020321 in words is "one trillion, twenty-one billion, three hundred forty-one million, twenty thousand, three hundred twenty-one".