1020322021013 has 4 divisors (see below), whose sum is σ = 1021480162668. Its totient is φ = 1019163879360.

The previous prime is 1020322021007. The next prime is 1020322021087. The reversal of 1020322021013 is 3101202230201.

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 135260657284 + 885061363729 = 367778^2 + 940777^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020322021013 - 2⁴ = 1020322020997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020322020982 and 1020322021000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020322021613) 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, 579069506 + ... + 579071267.

It is an arithmetic number, because the mean of its divisors is an integer number (255370040667).

Almost surely, 2^{1020322021013} is an apocalyptic number.

It is an amenable number.

1020322021013 is a deficient number, since it is larger than the sum of its proper divisors (1158141655).

1020322021013 is an equidigital number, since it uses as much as digits as its factorization.

1020322021013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158141654.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1020322021013 its reverse (3101202230201), we get a palindrome (4121524251214).

The spelling of 1020322021013 in words is "one trillion, twenty billion, three hundred twenty-two million, twenty-one thousand, thirteen".