20020021019111 has 2 divisors, whose sum is σ = 20020021019112. Its totient is φ = 20020021019110.

The previous prime is 20020021019069. The next prime is 20020021019129. The reversal of 20020021019111 is 11191012002002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20020021019111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20020021019171) 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, 10010010509555 + 10010010509556.

It is an arithmetic number, because the mean of its divisors is an integer number (10010010509556).

Almost surely, 2^{20020021019111} is an apocalyptic number.

20020021019111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020021019111 is an equidigital number, since it uses as much as digits as its factorization.

20020021019111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 20020021019111 in words is "twenty trillion, twenty billion, twenty-one million, nineteen thousand, one hundred eleven".