205622023 has 2 divisors, whose sum is σ = 205622024. Its totient is φ = 205622022.

The previous prime is 205621993. The next prime is 205622051. The reversal of 205622023 is 320226502.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205622023 is a prime.

It is a super-2 number, since 2×205622023² = 84560832685225058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 205621985 and 205622003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205622083) 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, 102811011 + 102811012.

It is an arithmetic number, because the mean of its divisors is an integer number (102811012).

Almost surely, 2^205622023 is an apocalyptic number.

205622023 is a deficient number, since it is larger than the sum of its proper divisors (1).

205622023 is an equidigital number, since it uses as much as digits as its factorization.

205622023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 205622023 is about 14339.5265960910. The cubic root of 205622023 is about 590.2326220505.

Adding to 205622023 its reverse (320226502), we get a palindrome (525848525).

The spelling of 205622023 in words is "two hundred five million, six hundred twenty-two thousand, twenty-three".