100120111018 has 8 divisors (see below), whose sum is σ = 150185302020. Its totient is φ = 50058343680.

The previous prime is 100120111001. The next prime is 100120111019. The reversal of 100120111018 is 810111021001.

It can be written as a sum of positive squares in 2 ways, for example, as 100119717889 + 393129 = 316417^2 + 627^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 100120110992 and 100120111010.

It is not an unprimeable number, because it can be changed into a prime (100120111019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 781513 + ... + 900556.

Almost surely, 2^100120111018 is an apocalyptic number.

100120111018 is a deficient number, since it is larger than the sum of its proper divisors (50065191002).

100120111018 is a wasteful number, since it uses less digits than its factorization.

100120111018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1711832.

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

Adding to 100120111018 its reverse (810111021001), we get a palindrome (910231132019).

The spelling of 100120111018 in words is "one hundred billion, one hundred twenty million, one hundred eleven thousand, eighteen".