8221858123 has 2 divisors, whose sum is σ = 8221858124. Its totient is φ = 8221858122.

The previous prime is 8221858109. The next prime is 8221858133. The reversal of 8221858123 is 3218581228.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8221858123 - 2⁵ = 8221858091 is a prime.

It is not a weakly prime, because it can be changed into another prime (8221858133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4110929061 + 4110929062.

It is an arithmetic number, because the mean of its divisors is an integer number (4110929062).

Almost surely, 2^8221858123 is an apocalyptic number.

8221858123 is a deficient number, since it is larger than the sum of its proper divisors (1).

8221858123 is an equidigital number, since it uses as much as digits as its factorization.

8221858123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61440, while the sum is 40.

The square root of 8221858123 is about 90674.4623529690. The cubic root of 8221858123 is about 2018.3198559836.

The spelling of 8221858123 in words is "eight billion, two hundred twenty-one million, eight hundred fifty-eight thousand, one hundred twenty-three".