111022021222020 has 144 divisors (see below), whose sum is σ = 348462918563760. Its totient is φ = 28578131140608.

The previous prime is 111022021222009. The next prime is 111022021222039. The reversal of 111022021222020 is 20222120220111.

It is a happy number.

111022021222020 is a `hidden beast` number, since 1 + 1 + 10 + 220 + 212 + 220 + 2 + 0 = 666.

111022021222020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 1056471511104 + 109965549710916 = 1027848^2 + 10486446^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 111022021221984 and 111022021222002.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19258024 + ... + 24349856.

It is an arithmetic number, because the mean of its divisors is an integer number (2419881378915).

Almost surely, 2^{111022021222020} is an apocalyptic number.

111022021222020 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 111022021222020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174231459281880).

111022021222020 is an abundant number, since it is smaller than the sum of its proper divisors (237440897341740).

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

111022021222020 is a wasteful number, since it uses less digits than its factorization.

111022021222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5096054 (or 5096049 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 111022021222020 its reverse (20222120220111), we get a palindrome (131244141442131).

The spelling of 111022021222020 in words is "one hundred eleven trillion, twenty-two billion, twenty-one million, two hundred twenty-two thousand, twenty".