2109101 has 2 divisors, whose sum is σ = 2109102. Its totient is φ = 2109100.

The previous prime is 2109097. The next prime is 2109103. The reversal of 2109101 is 1019012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2033476 + 75625 = 1426^2 + 275^2 .

It is a cyclic number.

It is not a de Polignac number, because 2109101 - 2² = 2109097 is a prime.

Together with 2109103, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2109103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1054550 + 1054551.

It is an arithmetic number, because the mean of its divisors is an integer number (1054551).

2^2109101 is an apocalyptic number.

It is an amenable number.

2109101 is a deficient number, since it is larger than the sum of its proper divisors (1).

2109101 is an equidigital number, since it uses as much as digits as its factorization.

2109101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 2109101 is about 1452.2744231033. The cubic root of 2109101 is about 128.2426427717.

The spelling of 2109101 in words is "two million, one hundred nine thousand, one hundred one".