2101223 has 2 divisors, whose sum is σ = 2101224. Its totient is φ = 2101222.

The previous prime is 2101219. The next prime is 2101237. The reversal of 2101223 is 3221012.

It is a happy number.

2101223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2101223 - 2² = 2101219 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2101213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050611 + 1050612.

It is an arithmetic number, because the mean of its divisors is an integer number (1050612).

2^2101223 is an apocalyptic number.

2101223 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101223 is an equidigital number, since it uses as much as digits as its factorization.

2101223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 2101223 is about 1449.5595882888. The cubic root of 2101223 is about 128.0827711715.

Adding to 2101223 its reverse (3221012), we get a palindrome (5322235).

The spelling of 2101223 in words is "two million, one hundred one thousand, two hundred twenty-three".