13022020021 has 2 divisors, whose sum is σ = 13022020022. Its totient is φ = 13022020020.

The previous prime is 13022020003. The next prime is 13022020051. The reversal of 13022020021 is 12002022031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10304483121 + 2717536900 = 101511^2 + 52130^2 .

It is a cyclic number.

It is not a de Polignac number, because 13022020021 - 2⁷ = 13022019893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13022019983 and 13022020010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13022020051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6511010010 + 6511010011.

It is an arithmetic number, because the mean of its divisors is an integer number (6511010011).

Almost surely, 2^13022020021 is an apocalyptic number.

It is an amenable number.

13022020021 is a deficient number, since it is larger than the sum of its proper divisors (1).

13022020021 is an equidigital number, since it uses as much as digits as its factorization.

13022020021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 13022020021 its reverse (12002022031), we get a palindrome (25024042052).

The spelling of 13022020021 in words is "thirteen billion, twenty-two million, twenty thousand, twenty-one".