211111123141 has 2 divisors, whose sum is σ = 211111123142. Its totient is φ = 211111123140.

The previous prime is 211111123127. The next prime is 211111123189. The reversal of 211111123141 is 141321111112.

It is a m-pointer prime, because the next prime (211111123189) can be obtained adding 211111123141 to its product of digits (48).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210723230116 + 387893025 = 459046^2 + 19695^2 .

It is a cyclic number.

It is not a de Polignac number, because 211111123141 - 2¹¹ = 211111121093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211111123541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105555561570 + 105555561571.

It is an arithmetic number, because the mean of its divisors is an integer number (105555561571).

Almost surely, 2^211111123141 is an apocalyptic number.

It is an amenable number.

211111123141 is a deficient number, since it is larger than the sum of its proper divisors (1).

211111123141 is an equidigital number, since it uses as much as digits as its factorization.

211111123141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48, while the sum is 19.

Adding to 211111123141 its reverse (141321111112), we get a palindrome (352432234253).

The spelling of 211111123141 in words is "two hundred eleven billion, one hundred eleven million, one hundred twenty-three thousand, one hundred forty-one".