211122120071 has 2 divisors, whose sum is σ = 211122120072. Its totient is φ = 211122120070.

The previous prime is 211122120043. The next prime is 211122120091. The reversal of 211122120071 is 170021221112.

It is a happy number.

It is an a-pointer prime, because the next prime (211122120091) can be obtained adding 211122120071 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211122120071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211122120091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105561060035 + 105561060036.

It is an arithmetic number, because the mean of its divisors is an integer number (105561060036).

Almost surely, 2^211122120071 is an apocalyptic number.

211122120071 is a deficient number, since it is larger than the sum of its proper divisors (1).

211122120071 is an equidigital number, since it uses as much as digits as its factorization.

211122120071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 211122120071 its reverse (170021221112), we get a palindrome (381143341183).

The spelling of 211122120071 in words is "two hundred eleven billion, one hundred twenty-two million, one hundred twenty thousand, seventy-one".