111012210020 has 12 divisors (see below), whose sum is σ = 233125641084. Its totient is φ = 44404884000.

The previous prime is 111012210011. The next prime is 111012210031. The reversal of 111012210020 is 20012210111.

It can be written as a sum of positive squares in 2 ways, for example, as 17650185316 + 93362024704 = 132854^2 + 305552^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111012209983 and 111012210010.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2775305231 + ... + 2775305270.

It is an arithmetic number, because the mean of its divisors is an integer number (19427136757).

Almost surely, 2^111012210020 is an apocalyptic number.

111012210020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111012210020 is an abundant number, since it is smaller than the sum of its proper divisors (122113431064).

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

111012210020 is a wasteful number, since it uses less digits than its factorization.

111012210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5550610510 (or 5550610508 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 111012210020 its reverse (20012210111), we get a palindrome (131024420131).

Subtracting from 111012210020 its reverse (20012210111), we obtain a palindrome (90999999909).

The spelling of 111012210020 in words is "one hundred eleven billion, twelve million, two hundred ten thousand, twenty".