2175720223 has 2 divisors, whose sum is σ = 2175720224. Its totient is φ = 2175720222.

The previous prime is 2175720221. The next prime is 2175720241. The reversal of 2175720223 is 3220275712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2175720223 - 2¹ = 2175720221 is a prime.

Together with 2175720221, 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 (2175720221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1087860111 + 1087860112.

It is an arithmetic number, because the mean of its divisors is an integer number (1087860112).

Almost surely, 2^2175720223 is an apocalyptic number.

2175720223 is a deficient number, since it is larger than the sum of its proper divisors (1).

2175720223 is an equidigital number, since it uses as much as digits as its factorization.

2175720223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 2175720223 is about 46644.6162273847. The cubic root of 2175720223 is about 1295.7891808223.

Adding to 2175720223 its reverse (3220275712), we get a palindrome (5395995935).

The spelling of 2175720223 in words is "two billion, one hundred seventy-five million, seven hundred twenty thousand, two hundred twenty-three".