2109223 has 2 divisors, whose sum is σ = 2109224. Its totient is φ = 2109222.

The previous prime is 2109203. The next prime is 2109253. The reversal of 2109223 is 3229012.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2109223 - 2²¹ = 12071 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2109223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2109203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1054611 + 1054612.

It is an arithmetic number, because the mean of its divisors is an integer number (1054612).

2^2109223 is an apocalyptic number.

2109223 is a deficient number, since it is larger than the sum of its proper divisors (1).

2109223 is an equidigital number, since it uses as much as digits as its factorization.

2109223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 2109223 is about 1452.3164255767. The cubic root of 2109223 is about 128.2451154368.

It can be divided in two parts, 210922 and 3, that added together give a triangular number (210925 = T₆₄₉).

The spelling of 2109223 in words is "two million, one hundred nine thousand, two hundred twenty-three".