211111220141 has 2 divisors, whose sum is σ = 211111220142. Its totient is φ = 211111220140.

The previous prime is 211111220083. The next prime is 211111220143. The reversal of 211111220141 is 141022111112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207384606025 + 3726614116 = 455395^2 + 61046^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211111220141 is a prime.

Together with 211111220143, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211111220143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105555610070 + 105555610071.

It is an arithmetic number, because the mean of its divisors is an integer number (105555610071).

Almost surely, 2^211111220141 is an apocalyptic number.

It is an amenable number.

211111220141 is a deficient number, since it is larger than the sum of its proper divisors (1).

211111220141 is an equidigital number, since it uses as much as digits as its factorization.

211111220141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 211111220141 its reverse (141022111112), we get a palindrome (352133331253).

The spelling of 211111220141 in words is "two hundred eleven billion, one hundred eleven million, two hundred twenty thousand, one hundred forty-one".