2101100111189 has 2 divisors, whose sum is σ = 2101100111190. Its totient is φ = 2101100111188.

The previous prime is 2101100111183. The next prime is 2101100111203. The reversal of 2101100111189 is 9811110011012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1175207764900 + 925892346289 = 1084070^2 + 962233^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2101100111189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101100111183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050550055594 + 1050550055595.

It is an arithmetic number, because the mean of its divisors is an integer number (1050550055595).

Almost surely, 2^{2101100111189} is an apocalyptic number.

It is an amenable number.

2101100111189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101100111189 is an equidigital number, since it uses as much as digits as its factorization.

2101100111189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 26.

The spelling of 2101100111189 in words is "two trillion, one hundred one billion, one hundred million, one hundred eleven thousand, one hundred eighty-nine".