205921223 has 2 divisors, whose sum is σ = 205921224. Its totient is φ = 205921222.

The previous prime is 205921213. The next prime is 205921237. The reversal of 205921223 is 322129502.

205921223 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 205921223 - 2⁴ = 205921207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205921192 and 205921201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205921213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102960611 + 102960612.

It is an arithmetic number, because the mean of its divisors is an integer number (102960612).

Almost surely, 2^205921223 is an apocalyptic number.

205921223 is a deficient number, since it is larger than the sum of its proper divisors (1).

205921223 is an equidigital number, since it uses as much as digits as its factorization.

205921223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 205921223 is about 14349.9555051575. The cubic root of 205921223 is about 590.5187652233.

The spelling of 205921223 in words is "two hundred five million, nine hundred twenty-one thousand, two hundred twenty-three".