211111100071 has 2 divisors, whose sum is σ = 211111100072. Its totient is φ = 211111100070.

The previous prime is 211111100029. The next prime is 211111100077. The reversal of 211111100071 is 170001111112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211111100071 - 2¹³ = 211111091879 is a prime.

It is a super-3 number, since 3×211111100071³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211111100077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105555550035 + 105555550036.

It is an arithmetic number, because the mean of its divisors is an integer number (105555550036).

Almost surely, 2^211111100071 is an apocalyptic number.

211111100071 is a deficient number, since it is larger than the sum of its proper divisors (1).

211111100071 is an equidigital number, since it uses as much as digits as its factorization.

211111100071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14, while the sum is 16.

Adding to 211111100071 its reverse (170001111112), we get a palindrome (381112211183).

The spelling of 211111100071 in words is "two hundred eleven billion, one hundred eleven million, one hundred thousand, seventy-one".