111010101218 has 8 divisors (see below), whose sum is σ = 176310160812. Its totient is φ = 52240047616.

The previous prime is 111010101211. The next prime is 111010101239. The reversal of 111010101218 is 812101010111.

It can be written as a sum of positive squares in 2 ways, for example, as 86040728929 + 24969372289 = 293327^2 + 158017^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 111010101196 and 111010101205.

It is not an unprimeable number, because it can be changed into a prime (111010101211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1632501455 + ... + 1632501522.

Almost surely, 2^111010101218 is an apocalyptic number.

111010101218 is a deficient number, since it is larger than the sum of its proper divisors (65300059594).

111010101218 is a wasteful number, since it uses less digits than its factorization.

111010101218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3265002996.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 111010101218 its reverse (812101010111), we get a palindrome (923111111329).

The spelling of 111010101218 in words is "one hundred eleven billion, ten million, one hundred one thousand, two hundred eighteen".