1110021218 has 4 divisors (see below), whose sum is σ = 1665031830. Its totient is φ = 555010608.

The previous prime is 1110021217. The next prime is 1110021223. The reversal of 1110021218 is 8121200111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8121200111 = 23 ⋅353095657.

It can be written as a sum of positive squares in only one way, i.e., 871843729 + 238177489 = 29527^2 + 15433^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1110021196 and 1110021205.

It is not an unprimeable number, because it can be changed into a prime (1110021217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277505303 + ... + 277505306.

Almost surely, 2^1110021218 is an apocalyptic number.

1110021218 is a deficient number, since it is larger than the sum of its proper divisors (555010612).

1110021218 is an equidigital number, since it uses as much as digits as its factorization.

1110021218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555010611.

The product of its (nonzero) digits is 32, while the sum is 17.

The square root of 1110021218 is about 33316.9809256481. The cubic root of 1110021218 is about 1035.4054027313.

Adding to 1110021218 its reverse (8121200111), we get a palindrome (9231221329).

The spelling of 1110021218 in words is "one billion, one hundred ten million, twenty-one thousand, two hundred eighteen".