2189111101 has 2 divisors, whose sum is σ = 2189111102. Its totient is φ = 2189111100.

The previous prime is 2189111077. The next prime is 2189111107. The reversal of 2189111101 is 1011119812.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2183225625 + 5885476 = 46725^2 + 2426^2 .

It is a cyclic number.

It is not a de Polignac number, because 2189111101 - 2⁹ = 2189110589 is a prime.

It is a super-3 number, since 3×2189111101³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2189111107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094555550 + 1094555551.

It is an arithmetic number, because the mean of its divisors is an integer number (1094555551).

Almost surely, 2^2189111101 is an apocalyptic number.

It is an amenable number.

2189111101 is a deficient number, since it is larger than the sum of its proper divisors (1).

2189111101 is an equidigital number, since it uses as much as digits as its factorization.

2189111101 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 25.

The square root of 2189111101 is about 46787.9375587341. The cubic root of 2189111101 is about 1298.4421380155.

The spelling of 2189111101 in words is "two billion, one hundred eighty-nine million, one hundred eleven thousand, one hundred one".