111122212020 has 48 divisors (see below), whose sum is σ = 314638188480. Its totient is φ = 29299638016.

The previous prime is 111122212007. The next prime is 111122212037. The reversal of 111122212020 is 20212221111.

111122212020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10399362 + ... + 10410041.

It is an arithmetic number, because the mean of its divisors is an integer number (6554962260).

Almost surely, 2^111122212020 is an apocalyptic number.

111122212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111122212020 is an abundant number, since it is smaller than the sum of its proper divisors (203515976460).

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

111122212020 is a wasteful number, since it uses less digits than its factorization.

111122212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20809504 (or 20809502 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111122212020 its reverse (20212221111), we get a palindrome (131334433131).

Subtracting from 111122212020 its reverse (20212221111), we obtain a palindrome (90909990909).

The spelling of 111122212020 in words is "one hundred eleven billion, one hundred twenty-two million, two hundred twelve thousand, twenty".