111110211222020 has 24 divisors (see below), whose sum is σ = 233885675041368. Its totient is φ = 44338516588800.

The previous prime is 111110211221957. The next prime is 111110211222047. The reversal of 111110211222020 is 20222112011111.

It can be written as a sum of positive squares in 4 ways, for example, as 4213470550276 + 106896740671744 = 2052674^2 + 10339088^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 111110211222020.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6597985121 + ... + 6598001960.

It is an arithmetic number, because the mean of its divisors is an integer number (9745236460057).

Almost surely, 2^{111110211222020} is an apocalyptic number.

111110211222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111110211222020 is an abundant number, since it is smaller than the sum of its proper divisors (122775463819348).

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

111110211222020 is a wasteful number, since it uses less digits than its factorization.

111110211222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13195987511 (or 13195987509 counting only the distinct ones).

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

Adding to 111110211222020 its reverse (20222112011111), we get a palindrome (131332323233131).

The spelling of 111110211222020 in words is "one hundred eleven trillion, one hundred ten billion, two hundred eleven million, two hundred twenty-two thousand, twenty".