1020320032021 has 8 divisors (see below), whose sum is σ = 1081694378520. Its totient is φ = 959096299008.

The previous prime is 1020320032013. The next prime is 1020320032033. The reversal of 1020320032021 is 1202300230201.

1020320032021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 294051330225 + 726268701796 = 542265^2 + 852214^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020320032021 - 2³ = 1020320032013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020320031986 and 1020320032004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020320032621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37639416 + ... + 37666513.

It is an arithmetic number, because the mean of its divisors is an integer number (135211797315).

Almost surely, 2^{1020320032021} is an apocalyptic number.

It is an amenable number.

1020320032021 is a deficient number, since it is larger than the sum of its proper divisors (61374346499).

1020320032021 is an equidigital number, since it uses as much as digits as its factorization.

1020320032021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75306743.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 1020320032021 its reverse (1202300230201), we get a palindrome (2222620262222).

The spelling of 1020320032021 in words is "one trillion, twenty billion, three hundred twenty million, thirty-two thousand, twenty-one".