211012221271 has 2 divisors, whose sum is σ = 211012221272. Its totient is φ = 211012221270.

The previous prime is 211012221191. The next prime is 211012221281. The reversal of 211012221271 is 172122210112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211012221271 - 2⁷ = 211012221143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211012221281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105506110635 + 105506110636.

It is an arithmetic number, because the mean of its divisors is an integer number (105506110636).

Almost surely, 2^211012221271 is an apocalyptic number.

211012221271 is a deficient number, since it is larger than the sum of its proper divisors (1).

211012221271 is an equidigital number, since it uses as much as digits as its factorization.

211012221271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 211012221271 its reverse (172122210112), we get a palindrome (383134431383).

The spelling of 211012221271 in words is "two hundred eleven billion, twelve million, two hundred twenty-one thousand, two hundred seventy-one".