2003020420021 has 2 divisors, whose sum is σ = 2003020420022. Its totient is φ = 2003020420020.

The previous prime is 2003020420003. The next prime is 2003020420039. The reversal of 2003020420021 is 1200240203002.

It is a balanced prime because it is at equal distance from previous prime (2003020420003) and next prime (2003020420039).

It can be written as a sum of positive squares in only one way, i.e., 1052953038225 + 950067381796 = 1026135^2 + 974714^2 .

It is a cyclic number.

It is not a de Polignac number, because 2003020420021 - 2⁹ = 2003020419509 is a prime.

It is a super-2 number, since 2×2003020420021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2003020419977 and 2003020420004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2003020426021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001510210010 + 1001510210011.

It is an arithmetic number, because the mean of its divisors is an integer number (1001510210011).

Almost surely, 2^{2003020420021} is an apocalyptic number.

It is an amenable number.

2003020420021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2003020420021 is an equidigital number, since it uses as much as digits as its factorization.

2003020420021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 2003020420021 its reverse (1200240203002), we get a palindrome (3203260623023).

The spelling of 2003020420021 in words is "two trillion, three billion, twenty million, four hundred twenty thousand, twenty-one".