111112020212020 has 24 divisors (see below), whose sum is σ = 233335450822824. Its totient is φ = 44444768393856.

The previous prime is 111112020211981. The next prime is 111112020212023. The reversal of 111112020212020 is 20212020211111.

It can be written as a sum of positive squares in 4 ways, for example, as 7476715024 + 111104543496996 = 86468^2 + 10540614^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111112020211985 and 111112020212003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111112020212023) by changing a digit.

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, 32518002 + ... + 35772118.

It is an arithmetic number, because the mean of its divisors is an integer number (9722310450951).

Almost surely, 2^{111112020212020} is an apocalyptic number.

111112020212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111112020212020 is an abundant number, since it is smaller than the sum of its proper divisors (122223430610804).

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

111112020212020 is a wasteful number, since it uses less digits than its factorization.

111112020212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4961379 (or 4961377 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111112020212020 its reverse (20212020211111), we get a palindrome (131324040423131).

Subtracting from 111112020212020 its reverse (20212020211111), we obtain a palindrome (90900000000909).

The spelling of 111112020212020 in words is "one hundred eleven trillion, one hundred twelve billion, twenty million, two hundred twelve thousand, twenty".