211420144211 has 2 divisors, whose sum is σ = 211420144212. Its totient is φ = 211420144210.

The previous prime is 211420144157. The next prime is 211420144217. The reversal of 211420144211 is 112441024112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211420144211 is a prime.

It is not a weakly prime, because it can be changed into another prime (211420144217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105710072105 + 105710072106.

It is an arithmetic number, because the mean of its divisors is an integer number (105710072106).

Almost surely, 2^211420144211 is an apocalyptic number.

211420144211 is a deficient number, since it is larger than the sum of its proper divisors (1).

211420144211 is an equidigital number, since it uses as much as digits as its factorization.

211420144211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 211420144211 its reverse (112441024112), we get a palindrome (323861168323).

The spelling of 211420144211 in words is "two hundred eleven billion, four hundred twenty million, one hundred forty-four thousand, two hundred eleven".