101020091071 has 2 divisors, whose sum is σ = 101020091072. Its totient is φ = 101020091070.

The previous prime is 101020091069. The next prime is 101020091131. The reversal of 101020091071 is 170190020101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101020091071 - 2¹ = 101020091069 is a prime.

Together with 101020091069, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101020091041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50510045535 + 50510045536.

It is an arithmetic number, because the mean of its divisors is an integer number (50510045536).

Almost surely, 2^101020091071 is an apocalyptic number.

101020091071 is a deficient number, since it is larger than the sum of its proper divisors (1).

101020091071 is an equidigital number, since it uses as much as digits as its factorization.

101020091071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126, while the sum is 22.

The spelling of 101020091071 in words is "one hundred one billion, twenty million, ninety-one thousand, seventy-one".