123110219 has 2 divisors, whose sum is σ = 123110220. Its totient is φ = 123110218.

The previous prime is 123110189. The next prime is 123110231. The reversal of 123110219 is 912011321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123110219 is a prime.

It is a super-2 number, since 2×123110219² = 30312252044455922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123110219.

It is not a weakly prime, because it can be changed into another prime (123130219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61555109 + 61555110.

It is an arithmetic number, because the mean of its divisors is an integer number (61555110).

Almost surely, 2^123110219 is an apocalyptic number.

123110219 is a deficient number, since it is larger than the sum of its proper divisors (1).

123110219 is an equidigital number, since it uses as much as digits as its factorization.

123110219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 123110219 is about 11095.5044500014. The cubic root of 123110219 is about 497.4674864066.

The spelling of 123110219 in words is "one hundred twenty-three million, one hundred ten thousand, two hundred nineteen".