20020111010071 has 2 divisors, whose sum is σ = 20020111010072. Its totient is φ = 20020111010070.

The previous prime is 20020111010063. The next prime is 20020111010143. The reversal of 20020111010071 is 17001011102002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20020111010071 - 2³ = 20020111010063 is a prime.

It is a super-3 number, since 3×20020111010071³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20020111010771) 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, 10010055505035 + 10010055505036.

It is an arithmetic number, because the mean of its divisors is an integer number (10010055505036).

Almost surely, 2^{20020111010071} is an apocalyptic number.

20020111010071 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020111010071 is an equidigital number, since it uses as much as digits as its factorization.

20020111010071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28, while the sum is 16.

Adding to 20020111010071 its reverse (17001011102002), we get a palindrome (37021122112073).

The spelling of 20020111010071 in words is "twenty trillion, twenty billion, one hundred eleven million, ten thousand, seventy-one".