1211100116141 has 2 divisors, whose sum is σ = 1211100116142. Its totient is φ = 1211100116140.

The previous prime is 1211100116137. The next prime is 1211100116189. The reversal of 1211100116141 is 1416110011121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 711583350916 + 499516765225 = 843554^2 + 706765^2 .

It is a cyclic number.

It is not a de Polignac number, because 1211100116141 - 2² = 1211100116137 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211100110141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605550058070 + 605550058071.

It is an arithmetic number, because the mean of its divisors is an integer number (605550058071).

Almost surely, 2^{1211100116141} is an apocalyptic number.

It is an amenable number.

1211100116141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211100116141 is an equidigital number, since it uses as much as digits as its factorization.

1211100116141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 20.

Adding to 1211100116141 its reverse (1416110011121), we get a palindrome (2627210127262).

The spelling of 1211100116141 in words is "one trillion, two hundred eleven billion, one hundred million, one hundred sixteen thousand, one hundred forty-one".