20100111071 has 2 divisors, whose sum is σ = 20100111072. Its totient is φ = 20100111070.

The previous prime is 20100111067. The next prime is 20100111151. The reversal of 20100111071 is 17011100102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20100111071 - 2² = 20100111067 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20100111011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050055535 + 10050055536.

It is an arithmetic number, because the mean of its divisors is an integer number (10050055536).

Almost surely, 2^20100111071 is an apocalyptic number.

20100111071 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100111071 is an equidigital number, since it uses as much as digits as its factorization.

20100111071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14, while the sum is 14.

Adding to 20100111071 its reverse (17011100102), we get a palindrome (37111211173).

The spelling of 20100111071 in words is "twenty billion, one hundred million, one hundred eleven thousand, seventy-one".