2101102189 has 2 divisors, whose sum is σ = 2101102190. Its totient is φ = 2101102188.

The previous prime is 2101102181. The next prime is 2101102217. The reversal of 2101102189 is 9812011012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2050550089 + 50552100 = 45283^2 + 7110^2 .

It is a cyclic number.

It is not a de Polignac number, because 2101102189 - 2³ = 2101102181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101102181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050551094 + 1050551095.

It is an arithmetic number, because the mean of its divisors is an integer number (1050551095).

Almost surely, 2^2101102189 is an apocalyptic number.

It is an amenable number.

2101102189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101102189 is an equidigital number, since it uses as much as digits as its factorization.

2101102189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 25.

The square root of 2101102189 is about 45837.7812399335. The cubic root of 2101102189 is about 1280.8031639413.

The spelling of 2101102189 in words is "two billion, one hundred one million, one hundred two thousand, one hundred eighty-nine".