11122111222218 has 24 divisors (see below), whose sum is σ = 24170711007456. Its totient is φ = 3696169890600.

The previous prime is 11122111222193. The next prime is 11122111222231. The reversal of 11122111222218 is 81222211122111.

11122111222218 is a `hidden beast` number, since 1 + 1 + 1 + 221 + 1 + 1 + 222 + 218 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 11122111222191 and 11122111222200.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 933370278 + ... + 933382193.

It is an arithmetic number, because the mean of its divisors is an integer number (1007112958644).

Almost surely, 2^{11122111222218} is an apocalyptic number.

11122111222218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11122111222218 is an abundant number, since it is smaller than the sum of its proper divisors (13048599785238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11122111222218 is a wasteful number, since it uses less digits than its factorization.

11122111222218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1866752810 (or 1866752807 counting only the distinct ones).

The product of its digits is 512, while the sum is 27.

Adding to 11122111222218 its reverse (81222211122111), we get a palindrome (92344322344329).

The spelling of 11122111222218 in words is "eleven trillion, one hundred twenty-two billion, one hundred eleven million, two hundred twenty-two thousand, two hundred eighteen".