111201222112020 has 144 divisors (see below), whose sum is σ = 346433867030160. Its totient is φ = 28851626262528.

The previous prime is 111201222111949. The next prime is 111201222112021. The reversal of 111201222112020 is 20211222102111.

111201222112020 is a `hidden beast` number, since 11 + 120 + 122 + 211 + 202 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 3513240404496 + 107687981707524 = 1874364^2 + 10377282^2 .

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 = 111201222111984 and 111201222112002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111201222112021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 401412916 + ... + 401689844.

It is an arithmetic number, because the mean of its divisors is an integer number (2405790743265).

Almost surely, 2^{111201222112020} is an apocalyptic number.

111201222112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111201222112020 is an abundant number, since it is smaller than the sum of its proper divisors (235232644918140).

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

111201222112020 is a wasteful number, since it uses less digits than its factorization.

111201222112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337274 (or 337269 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111201222112020 its reverse (20211222102111), we get a palindrome (131412444214131).

Subtracting from 111201222112020 its reverse (20211222102111), we obtain a palindrome (90990000009909).

The spelling of 111201222112020 in words is "one hundred eleven trillion, two hundred one billion, two hundred twenty-two million, one hundred twelve thousand, twenty".