120100018 has 4 divisors (see below), whose sum is σ = 180150030. Its totient is φ = 60050008.

The previous prime is 120100003. The next prime is 120100027. The reversal of 120100018 is 810001021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 810001021 = 107 ⋅7570103.

It can be written as a sum of positive squares in only one way, i.e., 111788329 + 8311689 = 10573^2 + 2883^2 .

It is a junction number, because it is equal to n+sod(n) for n = 120099980 and 120100007.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30025003 + ... + 30025006.

Almost surely, 2^120100018 is an apocalyptic number.

120100018 is a deficient number, since it is larger than the sum of its proper divisors (60050012).

120100018 is an equidigital number, since it uses as much as digits as its factorization.

120100018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60050011.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 120100018 is about 10959.0153754797. The cubic root of 120100018 is about 493.3794132552.

Adding to 120100018 its reverse (810001021), we get a palindrome (930101039).

The spelling of 120100018 in words is "one hundred twenty million, one hundred thousand, eighteen".