8216123 has 2 divisors, whose sum is σ = 8216124. Its totient is φ = 8216122.

The previous prime is 8216111. The next prime is 8216137. The reversal of 8216123 is 3216128.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8216123 - 2⁴ = 8216107 is a prime.

It is a super-2 number, since 2×8216123² = 135009354302258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8216723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4108061 + 4108062.

It is an arithmetic number, because the mean of its divisors is an integer number (4108062).

Almost surely, 2^8216123 is an apocalyptic number.

8216123 is a deficient number, since it is larger than the sum of its proper divisors (1).

8216123 is an equidigital number, since it uses as much as digits as its factorization.

8216123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 23.

The square root of 8216123 is about 2866.3780281045. The cubic root of 8216123 is about 201.7850456612.

The spelling of 8216123 in words is "eight million, two hundred sixteen thousand, one hundred twenty-three".