211142212271 has 2 divisors, whose sum is σ = 211142212272. Its totient is φ = 211142212270.

The previous prime is 211142212153. The next prime is 211142212279. The reversal of 211142212271 is 172212241112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211142212271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211142212271.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211142212279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105571106135 + 105571106136.

It is an arithmetic number, because the mean of its divisors is an integer number (105571106136).

Almost surely, 2^211142212271 is an apocalyptic number.

211142212271 is a deficient number, since it is larger than the sum of its proper divisors (1).

211142212271 is an equidigital number, since it uses as much as digits as its factorization.

211142212271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 896, while the sum is 26.

Adding to 211142212271 its reverse (172212241112), we get a palindrome (383354453383).

The spelling of 211142212271 in words is "two hundred eleven billion, one hundred forty-two million, two hundred twelve thousand, two hundred seventy-one".