2100229 has 2 divisors, whose sum is σ = 2100230. Its totient is φ = 2100228.

The previous prime is 2100227. The next prime is 2100239. The reversal of 2100229 is 9220012.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1822500 + 277729 = 1350^2 + 527^2 .

It is a cyclic number.

It is not a de Polignac number, because 2100229 - 2¹ = 2100227 is a prime.

Together with 2100227, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2100221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050114 + 1050115.

It is an arithmetic number, because the mean of its divisors is an integer number (1050115).

2^2100229 is an apocalyptic number.

It is an amenable number.

2100229 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100229 is an equidigital number, since it uses as much as digits as its factorization.

2100229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2100229 is about 1449.2166849716. The cubic root of 2100229 is about 128.0625711332.

The spelling of 2100229 in words is "two million, one hundred thousand, two hundred twenty-nine".