1110221201818 has 16 divisors (see below), whose sum is σ = 1706332970664. Its totient is φ = 541449629440.

The previous prime is 1110221201813. The next prime is 1110221201819. The reversal of 1110221201818 is 8181021220111.

It can be written as a sum of positive squares in 4 ways, for example, as 536258896209 + 573962305609 = 732297^2 + 757603^2 .

It is a super-2 number, since 2×1110221201818² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1110221201813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1153405 + ... + 1884352.

Almost surely, 2^{1110221201818} is an apocalyptic number.

1110221201818 is a deficient number, since it is larger than the sum of its proper divisors (596111768846).

1110221201818 is a wasteful number, since it uses less digits than its factorization.

1110221201818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3042257.

The product of its (nonzero) digits is 512, while the sum is 28.

Adding to 1110221201818 its reverse (8181021220111), we get a palindrome (9291242421929).

The spelling of 1110221201818 in words is "one trillion, one hundred ten billion, two hundred twenty-one million, two hundred one thousand, eight hundred eighteen".