10020031030021 has 2 divisors, whose sum is σ = 10020031030022. Its totient is φ = 10020031030020.

The previous prime is 10020031030019. The next prime is 10020031030043. The reversal of 10020031030021 is 12003013002001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8025832340100 + 1994198689921 = 2832990^2 + 1412161^2 .

It is a cyclic number.

It is not a de Polignac number, because 10020031030021 - 2¹ = 10020031030019 is a prime.

Together with 10020031030019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 10020031029983 and 10020031030010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10020031033021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010015515010 + 5010015515011.

It is an arithmetic number, because the mean of its divisors is an integer number (5010015515011).

Almost surely, 2^{10020031030021} is an apocalyptic number.

It is an amenable number.

10020031030021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10020031030021 is an equidigital number, since it uses as much as digits as its factorization.

10020031030021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 10020031030021 its reverse (12003013002001), we get a palindrome (22023044032022).

The spelling of 10020031030021 in words is "ten trillion, twenty billion, thirty-one million, thirty thousand, twenty-one".