2021111002003 has 2 divisors, whose sum is σ = 2021111002004. Its totient is φ = 2021111002002.

The previous prime is 2021111001991. The next prime is 2021111002033. The reversal of 2021111002003 is 3002001111202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2021111002003 - 2⁹ = 2021111001491 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021111002033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010555501001 + 1010555501002.

It is an arithmetic number, because the mean of its divisors is an integer number (1010555501002).

Almost surely, 2^{2021111002003} is an apocalyptic number.

2021111002003 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021111002003 is an equidigital number, since it uses as much as digits as its factorization.

2021111002003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 2021111002003 its reverse (3002001111202), we get a palindrome (5023112113205).

The spelling of 2021111002003 in words is "two trillion, twenty-one billion, one hundred eleven million, two thousand, three".