211222110221071 has 2 divisors, whose sum is σ = 211222110221072. Its totient is φ = 211222110221070.

The previous prime is 211222110220997. The next prime is 211222110221137. The reversal of 211222110221071 is 170122011222112.

It is a happy number.

211222110221071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211222110221071 - 2¹⁵ = 211222110188303 is a prime.

It is a super-2 number, since 2×211222110221071² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211222110221371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105611055110535 + 105611055110536.

It is an arithmetic number, because the mean of its divisors is an integer number (105611055110536).

Almost surely, 2^{211222110221071} is an apocalyptic number.

211222110221071 is a deficient number, since it is larger than the sum of its proper divisors (1).

211222110221071 is an equidigital number, since it uses as much as digits as its factorization.

211222110221071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 25.

Adding to 211222110221071 its reverse (170122011222112), we get a palindrome (381344121443183).

The spelling of 211222110221071 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred ten million, two hundred twenty-one thousand, seventy-one".