20111702071 has 2 divisors, whose sum is σ = 20111702072. Its totient is φ = 20111702070.

The previous prime is 20111701969. The next prime is 20111702077. The reversal of 20111702071 is 17020711102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20111702071 - 2⁹ = 20111701559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20111702077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055851035 + 10055851036.

It is an arithmetic number, because the mean of its divisors is an integer number (10055851036).

Almost surely, 2^20111702071 is an apocalyptic number.

20111702071 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111702071 is an equidigital number, since it uses as much as digits as its factorization.

20111702071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196, while the sum is 22.

The spelling of 20111702071 in words is "twenty billion, one hundred eleven million, seven hundred two thousand, seventy-one".