111210220220 has 192 divisors, whose sum is σ = 279866482560. Its totient is φ = 36642816000.

The previous prime is 111210220201. The next prime is 111210220243. The reversal of 111210220220 is 22022012111.

It is a junction number, because it is equal to n+sod(n) for n = 111210220195 and 111210220204.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 43491182 + ... + 43493738.

It is an arithmetic number, because the mean of its divisors is an integer number (1457637930).

Almost surely, 2^111210220220 is an apocalyptic number.

111210220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111210220220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139933241280).

111210220220 is an abundant number, since it is smaller than the sum of its proper divisors (168656262340).

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

111210220220 is a wasteful number, since it uses less digits than its factorization.

111210220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3024 (or 3022 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 111210220220 its reverse (22022012111), we get a palindrome (133232232331).

The spelling of 111210220220 in words is "one hundred eleven billion, two hundred ten million, two hundred twenty thousand, two hundred twenty".